Merge pull request #1124 from TriliumNext/feature/in_app_help

In-app help

e2e/help.spec.ts

@@ -8,7 +8,7 @@ test("Help popup", async ({ page, context }) => {
     await app.goto();
 
     const popupPromise = page.waitForEvent("popup");
-    await app.currentNoteSplit.press("F1");
+    await app.currentNoteSplit.press("Shift+F1");
     await page.getByRole("link", { name: "online" }).click();
     const popup = await popupPromise;
     expect(popup.url()).toBe("https://triliumnext.github.io/Docs/");

src/public/app/components/app_context.ts

@@ -24,6 +24,7 @@ import type { Attribute } from "../services/attribute_parser.js";
 import type NoteTreeWidget from "../widgets/note_tree.js";
 import type { default as NoteContext, GetTextEditorCallback } from "./note_context.js";
 import type { ContextMenuEvent } from "../menus/context_menu.js";
+import type TypeWidget from "../widgets/type_widgets/type_widget.js";
 
 interface Layout {
     getRootWidget: (appContext: AppContext) => RootWidget;
@@ -61,8 +62,8 @@ export interface NoteCommandData extends CommandData {
     viewScope?: ViewScope;
 }
 
-export interface ExecuteCommandData extends CommandData {
+export interface ExecuteCommandData<T> extends CommandData {
-    resolve: unknown;
+    resolve: (data: T) => void
 }
 
 /**
@@ -77,6 +78,7 @@ export type CommandMappings = {
         searchString?: string;
         ancestorNoteId?: string | null;
     };
+    closeTocCommand: CommandData;
     showLaunchBarSubtree: CommandData;
     showOptions: CommandData & {
         section: string;
@@ -151,12 +153,16 @@ export type CommandMappings = {
         callback: (value: NoteDetailWidget | PromiseLike<NoteDetailWidget>) => void;
     };
     executeWithTextEditor: CommandData &
-        ExecuteCommandData & {
+        ExecuteCommandData<TextEditor> & {
             callback?: GetTextEditorCallback;
         };
-    executeWithCodeEditor: CommandData & ExecuteCommandData;
+    executeWithCodeEditor: CommandData & ExecuteCommandData<null>;
-    executeWithContentElement: CommandData & ExecuteCommandData;
+    /**
-    executeWithTypeWidget: CommandData & ExecuteCommandData;
+     * Called upon when attempting to retrieve the content element of a {@link NoteContext}.
+     * Generally should not be invoked manually, as it is used by {@link NoteContext.getContentElement}.
+     */
+    executeWithContentElement: CommandData & ExecuteCommandData<JQuery<HTMLElement>>;
+    executeWithTypeWidget: CommandData & ExecuteCommandData<TypeWidget | null>;
     addTextToActiveEditor: CommandData & {
         text: string;
     };
@@ -202,6 +208,9 @@ export type CommandMappings = {
         zoomFactor: string;
     }
 
+    reEvaluateRightPaneVisibility: CommandData;
+    runActiveNote: CommandData;
+
     // Geomap
     deleteFromMap: { noteId: string },
     openGeoLocation: { noteId: string, event: JQuery.MouseDownEvent }
@@ -247,7 +256,7 @@ type EventMappings = {
     };
     noteSwitched: {
         noteContext: NoteContext;
-        notePath: string | null;
+        notePath?: string | null;
     };
     noteSwitchedAndActivatedEvent: {
         noteContext: NoteContext;
@@ -262,6 +271,9 @@ type EventMappings = {
     reEvaluateHighlightsListWidgetVisibility: {
         noteId: string | undefined;
     };
+    reEvaluateTocWidgetVisibility: {
+        noteId: string | undefined;
+    };
     showHighlightsListWidget: {
         noteId: string;
     };
@@ -297,7 +309,12 @@ type EventMappings = {
     };
     refreshNoteList: {
         noteId: string;
-    }
+    };
+    showToc: {
+        noteId: string;
+    };
+    scrollToEnd: { ntxId: string };
+    noteTypeMimeChanged: { noteId: string };
 };
 
 export type EventListener<T extends EventNames> = {

src/public/app/components/note_context.ts

@@ -9,6 +9,7 @@ import hoistedNoteService from "../services/hoisted_note.js";
 import options from "../services/options.js";
 import type { ViewScope } from "../services/link.js";
 import type FNote from "../entities/fnote.js";
+import type TypeWidget from "../widgets/type_widgets/type_widget.js";
 
 interface SetNoteOpts {
     triggerSwitchEvent?: unknown;
@@ -288,7 +289,7 @@ class NoteContext extends Component implements EventListener<"entitiesReloaded">
     hasNoteList() {
         return (
             this.note &&
-            this.viewScope?.viewMode === "default" &&
+            ["default", "contextual-help"].includes(this.viewScope?.viewMode ?? "") &&
             this.note.hasChildren() &&
             ["book", "text", "code"].includes(this.note.type) &&
             this.note.mime !== "text/x-sqlite;schema=trilium" &&
@@ -319,6 +320,15 @@ class NoteContext extends Component implements EventListener<"entitiesReloaded">
         );
     }
 
+    /**
+     * Returns a promise which will retrieve the JQuery element of the content of this note context.
+     *
+     * Do note that retrieving the content element needs to be handled by the type widget, which is the one which
+     * provides the content element by listening to the `executeWithContentElement` event. Not all note types support
+     * this.
+     *
+     * If no content could be determined `null` is returned instead.
+     */
     async getContentElement() {
         return this.timeout<JQuery<HTMLElement>>(
             new Promise((resolve) =>
@@ -332,7 +342,7 @@ class NoteContext extends Component implements EventListener<"entitiesReloaded">
 
     async getTypeWidget() {
         return this.timeout(
-            new Promise((resolve) =>
+            new Promise<TypeWidget | null>((resolve) =>
                 appContext.triggerCommand("executeWithTypeWidget", {
                     resolve,
                     ntxId: this.ntxId

src/public/app/components/root_command_executor.ts

@@ -90,6 +90,10 @@ export default class RootCommandExecutor extends Component {
         await appContext.tabManager.openTabWithNoteWithHoisting("_backendLog", { activate: true });
     }
 
+    async showHelpCommand() {
+        await this.showAndHoistSubtree("_help");
+    }
+
     async showLaunchBarSubtreeCommand() {
         const rootNote = utils.isMobile() ? "_lbMobileRoot" : "_lbRoot";
         await this.showAndHoistSubtree(rootNote);

src/public/app/doc_notes/en/User Guide/!!!meta.json

@@ -0,0 +1,500 @@
+{
+	"formatVersion": 2,
+	"appVersion": "0.91.5",
+	"files": [
+		{
+			"isClone": false,
+			"noteId": "OkOZllzB3fqN",
+			"notePath": [
+				"OkOZllzB3fqN"
+			],
+			"title": "User Guide",
+			"notePosition": 20,
+			"prefix": null,
+			"isExpanded": false,
+			"type": "text",
+			"mime": "text/html",
+			"attributes": [
+				{
+					"type": "label",
+					"name": "iconClass",
+					"value": "bx bx-help-circle",
+					"isInheritable": false,
+					"position": 10
+				}
+			],
+			"format": "html",
+			"attachments": [],
+			"dirFileName": "User Guide",
+			"children": [
+				{
+					"isClone": false,
+					"noteId": "wmegHv51MJMd",
+					"notePath": [
+						"OkOZllzB3fqN",
+						"wmegHv51MJMd"
+					],
+					"title": "Types of notes",
+					"notePosition": 20,
+					"prefix": null,
+					"isExpanded": false,
+					"type": "text",
+					"mime": "text/html",
+					"attributes": [],
+					"format": "html",
+					"attachments": [],
+					"dirFileName": "Types of notes",
+					"children": [
+						{
+							"isClone": false,
+							"noteId": "foPEtsL51pD2",
+							"notePath": [
+								"OkOZllzB3fqN",
+								"wmegHv51MJMd",
+								"foPEtsL51pD2"
+							],
+							"title": "Geo map",
+							"notePosition": 10,
+							"prefix": null,
+							"isExpanded": false,
+							"type": "text",
+							"mime": "text/html",
+							"attributes": [
+								{
+									"type": "label",
+									"name": "iconClass",
+									"value": "bx bx-map-alt",
+									"isInheritable": false,
+									"position": 10
+								}
+							],
+							"format": "html",
+							"dataFileName": "Geo map.html",
+							"attachments": [
+								{
+									"attachmentId": "viN50n5G4kB0",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "Geo map_image.png"
+								},
+								{
+									"attachmentId": "eUrcqc8RRuZG",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "1_Geo map_image.png"
+								},
+								{
+									"attachmentId": "1quk4yxJpeHZ",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "2_Geo map_image.png"
+								},
+								{
+									"attachmentId": "mgwGrtQZjxxb",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "3_Geo map_image.png"
+								},
+								{
+									"attachmentId": "JULizn130rVI",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "4_Geo map_image.png"
+								},
+								{
+									"attachmentId": "kcYjOvJDFkbS",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "5_Geo map_image.png"
+								},
+								{
+									"attachmentId": "ut6vm2aXVfXI",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "6_Geo map_image.png"
+								},
+								{
+									"attachmentId": "0AwaQMqt3FVA",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "7_Geo map_image.png"
+								},
+								{
+									"attachmentId": "gFR2Izzp18LQ",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "8_Geo map_image.png"
+								},
+								{
+									"attachmentId": "PMqmCbNLlZOG",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "9_Geo map_image.png"
+								},
+								{
+									"attachmentId": "pKdtiq4r0eFY",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "10_Geo map_image.png"
+								},
+								{
+									"attachmentId": "FXRVvYpOxWyR",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "11_Geo map_image.png"
+								},
+								{
+									"attachmentId": "42AncDs7SSAf",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "12_Geo map_image.png"
+								},
+								{
+									"attachmentId": "gR2c2Thmfy3I",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "13_Geo map_image.png"
+								},
+								{
+									"attachmentId": "FDP3JzIVSnuJ",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "14_Geo map_image.png"
+								},
+								{
+									"attachmentId": "GhHYO2LteDmZ",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "15_Geo map_image.png"
+								},
+								{
+									"attachmentId": "J0baLTpafs7C",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "16_Geo map_image.png"
+								},
+								{
+									"attachmentId": "uYdb9wWf5Nuv",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "17_Geo map_image.png"
+								},
+								{
+									"attachmentId": "iSpyhQ5Ya6Nk",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "18_Geo map_image.png"
+								},
+								{
+									"attachmentId": "MdC0DpifJwu4",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "19_Geo map_image.png"
+								}
+							]
+						}
+					]
+				},
+				{
+					"isClone": false,
+					"noteId": "BDEpqZHDS51s",
+					"notePath": [
+						"OkOZllzB3fqN",
+						"BDEpqZHDS51s"
+					],
+					"title": "Working with notes",
+					"notePosition": 30,
+					"prefix": null,
+					"isExpanded": false,
+					"type": "text",
+					"mime": "text/html",
+					"attributes": [],
+					"format": "html",
+					"attachments": [],
+					"dirFileName": "Working with notes",
+					"children": [
+						{
+							"isClone": false,
+							"noteId": "13D1lOc9sqmZ",
+							"notePath": [
+								"OkOZllzB3fqN",
+								"BDEpqZHDS51s",
+								"13D1lOc9sqmZ"
+							],
+							"title": "Exporting as PDF",
+							"notePosition": 10,
+							"prefix": null,
+							"isExpanded": false,
+							"type": "text",
+							"mime": "text/html",
+							"attributes": [],
+							"format": "html",
+							"dataFileName": "Exporting as PDF.html",
+							"attachments": [
+								{
+									"attachmentId": "b3v1pLE6TF1Y",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "Exporting as PDF_image.png"
+								},
+								{
+									"attachmentId": "xsGM34t8ssKV",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "1_Exporting as PDF_image.png"
+								},
+								{
+									"attachmentId": "cvyes4f1Vhmm",
+									"title": "image.png",
+									"role": "image",
+									"mime": "image/png",
+									"position": 10,
+									"dataFileName": "2_Exporting as PDF_image.png"
+								}
+							]
+						}
+					]
+				},
+				{
+					"isClone": false,
+					"noteId": "XUG1egT28FBk",
+					"notePath": [
+						"OkOZllzB3fqN",
+						"XUG1egT28FBk"
+					],
+					"title": "Power users",
+					"notePosition": 50,
+					"prefix": null,
+					"isExpanded": true,
+					"type": "text",
+					"mime": "text/html",
+					"attributes": [],
+					"format": "html",
+					"attachments": [],
+					"dirFileName": "Power users",
+					"children": [
+						{
+							"isClone": false,
+							"noteId": "DtJJ20yEozPA",
+							"notePath": [
+								"OkOZllzB3fqN",
+								"XUG1egT28FBk",
+								"DtJJ20yEozPA"
+							],
+							"title": "Theme development",
+							"notePosition": 10,
+							"prefix": null,
+							"isExpanded": false,
+							"type": "text",
+							"mime": "text/html",
+							"attributes": [
+								{
+									"type": "label",
+									"name": "iconClass",
+									"value": "bx bx-palette",
+									"isInheritable": false,
+									"position": 10
+								}
+							],
+							"format": "html",
+							"attachments": [],
+							"dirFileName": "Theme development",
+							"children": [
+								{
+									"isClone": false,
+									"noteId": "5HH79ztN0fZA",
+									"notePath": [
+										"OkOZllzB3fqN",
+										"XUG1egT28FBk",
+										"DtJJ20yEozPA",
+										"5HH79ztN0fZA"
+									],
+									"title": "Creating a custom theme",
+									"notePosition": 10,
+									"prefix": null,
+									"isExpanded": false,
+									"type": "text",
+									"mime": "text/html",
+									"attributes": [
+										{
+											"type": "relation",
+											"name": "internalLink",
+											"value": "aH8Dk5aMiq7R",
+											"isInheritable": false,
+											"position": 10
+										}
+									],
+									"format": "html",
+									"dataFileName": "Creating a custom theme.html",
+									"attachments": [
+										{
+											"attachmentId": "bn93hwF7C8sR",
+											"title": "image.png",
+											"role": "image",
+											"mime": "image/png",
+											"position": 10,
+											"dataFileName": "Creating a custom theme_im.png"
+										},
+										{
+											"attachmentId": "17p6z24yW5eP",
+											"title": "image.png",
+											"role": "image",
+											"mime": "image/png",
+											"position": 10,
+											"dataFileName": "1_Creating a custom theme_im.png"
+										},
+										{
+											"attachmentId": "gXLyv5KXjfxg",
+											"title": "image.png",
+											"role": "image",
+											"mime": "image/png",
+											"position": 10,
+											"dataFileName": "2_Creating a custom theme_im.png"
+										},
+										{
+											"attachmentId": "AJHVfQtIQgJ7",
+											"title": "image.png",
+											"role": "image",
+											"mime": "image/png",
+											"position": 10,
+											"dataFileName": "3_Creating a custom theme_im.png"
+										},
+										{
+											"attachmentId": "on1gD7BzCWdN",
+											"title": "image.png",
+											"role": "image",
+											"mime": "image/png",
+											"position": 10,
+											"dataFileName": "4_Creating a custom theme_im.png"
+										},
+										{
+											"attachmentId": "K3cdwj8f90m0",
+											"title": "image.png",
+											"role": "image",
+											"mime": "image/png",
+											"position": 10,
+											"dataFileName": "5_Creating a custom theme_im.png"
+										}
+									]
+								},
+								{
+									"isClone": false,
+									"noteId": "aH8Dk5aMiq7R",
+									"notePath": [
+										"OkOZllzB3fqN",
+										"XUG1egT28FBk",
+										"DtJJ20yEozPA",
+										"aH8Dk5aMiq7R"
+									],
+									"title": "Theme base (legacy vs. next)",
+									"notePosition": 20,
+									"prefix": null,
+									"isExpanded": false,
+									"type": "text",
+									"mime": "text/html",
+									"attributes": [],
+									"format": "html",
+									"dataFileName": "Theme base (legacy vs. next).html",
+									"attachments": [
+										{
+											"attachmentId": "u0zkXkD7rGXA",
+											"title": "image.png",
+											"role": "image",
+											"mime": "image/png",
+											"position": 10,
+											"dataFileName": "Theme base (legacy vs. nex.png"
+										},
+										{
+											"attachmentId": "5z4bC0x0eH0P",
+											"title": "image.png",
+											"role": "image",
+											"mime": "image/png",
+											"position": 10,
+											"dataFileName": "1_Theme base (legacy vs. nex.png"
+										}
+									]
+								},
+								{
+									"isClone": false,
+									"noteId": "pMq6N1oBV9oo",
+									"notePath": [
+										"OkOZllzB3fqN",
+										"XUG1egT28FBk",
+										"DtJJ20yEozPA",
+										"pMq6N1oBV9oo"
+									],
+									"title": "Reference",
+									"notePosition": 30,
+									"prefix": null,
+									"isExpanded": false,
+									"type": "text",
+									"mime": "text/html",
+									"attributes": [],
+									"format": "html",
+									"dataFileName": "Reference.html",
+									"attachments": []
+								}
+							]
+						}
+					]
+				}
+			]
+		},
+		{
+			"noImport": true,
+			"dataFileName": "navigation.html"
+		},
+		{
+			"noImport": true,
+			"dataFileName": "index.html"
+		},
+		{
+			"noImport": true,
+			"dataFileName": "style.css"
+		}
+	]
+}

src/public/app/doc_notes/en/User Guide/User Guide/Power users/Theme development/Creating a custom theme.html

@@ -0,0 +1,94 @@
+<html>
+  
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="stylesheet" href="../../../style.css">
+    <base target="_parent">
+    <title data-trilium-title>Creating a custom theme</title>
+  </head>
+  
+  <body>
+    <div class="content">
+       <h1 data-trilium-h1>Creating a custom theme</h1>
+
+      <div class="ck-content">
+        <h2>Step 1. Find a place to place the themes</h2>
+        <p>Organization is an important aspect of managing a knowledge base. When
+          developing a new theme or importing an existing one it's a good idea to
+          keep them into one place.</p>
+        <p>As such, the first step is to create a new note to gather all the themes.</p>
+        <p>
+          <img src="Creating a custom theme_im.png" width="181" height="84">
+        </p>
+        <h2>Step 2. Create the theme</h2>
+        <figure class="table" style="width:100%;">
+          <table class="ck-table-resized">
+            <colgroup>
+              <col style="width:32.47%;">
+                <col style="width:67.53%;">
+            </colgroup>
+            <tbody>
+              <tr>
+                <td>
+                  <figure class="image">
+                    <img style="aspect-ratio:651/220;" src="1_Creating a custom theme_im.png"
+                    width="651" height="220">
+                  </figure>
+                </td>
+                <td style="vertical-align:top;">Themes are code notes with a special attribute. Start by creating a new
+                  code note.</td>
+              </tr>
+              <tr>
+                <td>
+                  <figure class="image">
+                    <img style="aspect-ratio:302/349;" src="2_Creating a custom theme_im.png"
+                    width="302" height="349">
+                  </figure>
+                </td>
+                <td style="vertical-align:top;">Then change the note type to a CSS code.</td>
+              </tr>
+              <tr>
+                <td>
+                  <figure class="image">
+                    <img style="aspect-ratio:316/133;" src="3_Creating a custom theme_im.png"
+                    width="316" height="133">
+                  </figure>
+                </td>
+                <td style="vertical-align:top;">In the <i>Owned Attributes</i> section define the <code>#appTheme</code> attribute
+                  to point to any desired name. This is the name that will show up in the
+                  appearance section in settings.</td>
+              </tr>
+            </tbody>
+          </table>
+        </figure>
+        <h2>Step 3. Define the theme's CSS</h2>
+        <p>As a very simple example we will change the background color of the launcher
+          pane to a shade of blue.</p>
+        <p>To alter the different variables of the theme:</p><pre><code class="language-text-css">:root {
+	--launcher-pane-background-color: #0d6efd;
+}</code></pre>
+        <h2>Step 4. Activating the theme</h2>
+        <p>Refresh the application (Ctrl+Shift+R is a good way to do so) and go to
+          settings. You should see the newly created theme:</p>
+        <p>
+          <img src="4_Creating a custom theme_im.png" width="631" height="481">
+        </p>
+        <p>Afterwards the application will refresh itself with the new theme:</p>
+        <p>
+          <img src="5_Creating a custom theme_im.png" width="653" height="554">
+        </p>
+        <p>Do note that the theme will be based off of the legacy theme. To override
+          that and base the theme on the new TriliumNext theme, see:&nbsp;<a class="reference-link"
+          href="Theme%20base%20(legacy%20vs.%20next).html">Theme base (legacy vs. next)</a>
+        </p>
+        <h2>Step 5. Making changes</h2>
+        <p>Simply go back to the note and change according to needs. To apply the
+          changes to the current window, press Ctrl+Shift+R to refresh.</p>
+        <p>It's a good idea to keep two windows, one for editing and the other one
+          for previewing the changes.</p>
+      </div>
+    </div>
+  </body>
+
+</html>

src/public/app/doc_notes/en/User Guide/User Guide/Power users/Theme development/Reference.html

@@ -0,0 +1,129 @@
+<html>
+  
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="stylesheet" href="../../../style.css">
+    <base target="_parent">
+    <title data-trilium-title>Reference</title>
+  </head>
+  
+  <body>
+    <div class="content">
+       <h1 data-trilium-h1>Reference</h1>
+
+      <div class="ck-content">
+        <h2>Detecting horizontal vs. vertical layout</h2>
+        <p>The user can select between vertical layout (the classical one, where
+          the launcher bar is on the left) and a horizontal layout (where the launcher
+          bar is on the top and tabs are full-width).</p>
+        <p>Different styles can be applied by using classes at <code>body</code> level:</p><pre><code class="language-text-x-trilium-auto">body.layout-vertical #left-pane {
+	/* Do something */
+}
+
+body.layout-horizontal #center-pane {
+	/* Do something else */	
+}</code></pre>
+        <p>The two different layouts use different containers (but they are present
+          in the DOM regardless of the user's choice), for example <code>#horizontal-main-container</code> and <code>#vertical-main-container</code> can
+          be used to customize the background of the content section.</p>
+        <h2>Detecting platform (Windows, macOS) or Electron</h2>
+        <p>It is possible to add particular styles that only apply to a given platform
+          by using the classes in <code>body</code>:</p>
+        <figure class="table">
+          <table>
+            <thead>
+              <tr>
+                <th>Windows</th>
+                <th>macOS</th>
+              </tr>
+            </thead>
+            <tbody>
+              <tr>
+                <td><pre><code class="language-text-x-trilium-auto">body.platform-win32 {
+	background: red;
+}</code></pre>
+                </td>
+                <td><pre><code class="language-text-x-trilium-auto">body.platform-darwin {
+	background: red;
+}</code></pre>
+                </td>
+              </tr>
+            </tbody>
+          </table>
+        </figure>
+        <p>It is also possible to only apply a style if running under Electron (desktop
+          application):</p><pre><code class="language-text-x-trilium-auto">body.electron {
+	background: blue;
+}</code></pre>
+        <h3>Native title bar</h3>
+        <p>It's possible to detect if the user has selected the native title bar
+          or the custom title bar by querying against <code>body</code>:</p><pre><code class="language-text-x-trilium-auto">body.electron.native-titlebar {
+	/* Do something */
+}
+
+body.electron:not(.native-titlebar) {
+	/* Do something else */
+}</code></pre>
+        <h3>Native window buttons</h3>
+        <p>When running under Electron with native title bar off, a feature was introduced
+          to use the platform-specific window buttons such as the semaphore on macOS.</p>
+        <p>See <a href="https://github.com/TriliumNext/Notes/pull/702">Native title bar buttons by eliandoran · Pull Request #702 · TriliumNext/Notes</a> for
+          the original implementation of this feature, including screenshots.</p>
+        <h4>On Windows</h4>
+        <p>The colors of the native window button area can be adjusted using a RGB
+          hex color:</p><pre><code class="language-text-x-trilium-auto">body {
+	--native-titlebar-foreground: #ffffff;
+	--native-titlebar-background: #ff0000;
+}</code></pre>
+        <p>It is also possible to use transparency at the cost of reduced hover colors
+          using a RGBA hex color:</p><pre><code class="language-text-x-trilium-auto">body {
+	--native-titlebar-background: #ff0000aa;
+}</code></pre>
+        <p>Note that the value is read when the window is initialized and then it
+          is refreshed only when the user changes their light/dark mode preference.</p>
+        <h4>On macOS</h4>
+        <p>On macOS the semaphore window buttons are enabled by default when the
+          native title bar is disabled. The offset of the buttons can be adjusted
+          using:</p><pre><code class="language-text-x-trilium-auto">body {
+    --native-titlebar-darwin-x-offset: 12;
+    --native-titlebar-darwin-y-offset: 14 !important;
+}</code></pre>
+        <h3>Background/transparency effects on Windows (Mica)</h3>
+        <p>Windows 11 offers a special background/transparency effect called Mica,
+          which can be enabled by themes by setting the <code>--background-material</code> variable
+          at <code>body</code> level:</p><pre><code class="language-text-x-trilium-auto">body.electron.platform-win32 {
+	--background-material: tabbed; 
+}</code></pre>
+        <p>The value can be either <code>tabbed</code> (especially useful for the horizontal
+          layout) or <code>mica</code> (ideal for the vertical layout).</p>
+        <p>Do note that the Mica effect is applied at <code>body</code> level and the
+          theme needs to make the entire hierarchy (semi-)transparent in order for
+          it to be visible. Use the TrilumNext theme as an inspiration.</p>
+        <h2>Note icons, tab workspace accent color</h2>
+        <p>Theme capabilities are small adjustments done through CSS variables that
+          can affect the layout or the visual aspect of the application.</p>
+        <p>In the tab bar, to display the icons of notes instead of the icon of the
+          workspace:</p><pre><code class="language-text-x-trilium-auto">:root {
+	--tab-note-icons: true;
+}</code></pre>
+        <p>When a workspace is hoisted for a given tab, it is possible to get the
+          background color of that workspace, for example to apply a small strip
+          on the tab instead of the whole background color:</p><pre><code class="language-text-x-trilium-auto">.note-tab .note-tab-wrapper {
+    --tab-background-color: initial !important;
+}
+
+.note-tab .note-tab-wrapper::after {
+    content: "";
+    position: absolute;
+    top: 0;
+    left: 0;
+    right: 0;
+    height: 3px;
+    background-color: var(--workspace-tab-background-color);
+}</code></pre>
+      </div>
+    </div>
+  </body>
+
+</html>

src/public/app/doc_notes/en/User Guide/User Guide/Power users/Theme development/Theme base (legacy vs. next).html

@@ -0,0 +1,36 @@
+<html>
+  
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="stylesheet" href="../../../style.css">
+    <base target="_parent">
+    <title data-trilium-title>Theme base (legacy vs. next)</title>
+  </head>
+  
+  <body>
+    <div class="content">
+       <h1 data-trilium-h1>Theme base (legacy vs. next)</h1>
+
+      <div class="ck-content">
+        <p>By default, any custom theme will be based on the legacy light theme.
+          To change the TriliumNext theme instead, add the <code>#appThemeBase=next</code> attribute
+          onto the existing theme. The <code>appTheme</code> attribute must also be
+          present.</p>
+        <p>
+          <img src="1_Theme base (legacy vs. nex.png" width="424" height="140">
+        </p>
+        <p>When <code>appThemeBase</code> is set to <code>next</code> it will use the
+          “TriliumNext (auto)” theme. Any other value is ignored and will use the
+          legacy white theme instead.</p>
+        <h2>Overrides</h2>
+        <p>Do note that the TriliumNext theme has a few more overrides than the legacy
+          theme, so you might need to suffix <code>!important</code> if the style changes
+          are not applied.</p><pre><code class="language-text-css">:root {
+	--launcher-pane-background-color: #0d6efd !important;
+}</code></pre>
+      </div>
+    </div>
+  </body>
+
+</html>

src/public/app/doc_notes/en/User Guide/User Guide/Types of notes/Geo map.html

@@ -0,0 +1,295 @@
+<html>
+  
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="stylesheet" href="../../style.css">
+    <base target="_parent">
+    <title data-trilium-title>Geo map</title>
+  </head>
+  
+  <body>
+    <div class="content">
+       <h1 data-trilium-h1>Geo map</h1>
+
+      <div class="ck-content">
+        <h2>Creating a new geo map</h2>
+        <figure class="table" style="width:100%;">
+          <table class="ck-table-resized">
+            <colgroup>
+              <col style="width:4.67%;">
+                <col style="width:57.81%;">
+                  <col style="width:37.52%;">
+            </colgroup>
+            <tbody>
+              <tr>
+                <th>1</th>
+                <td>
+                  <figure class="image image_resized" style="width:100%;">
+                    <img style="aspect-ratio:1256/1044;" src="Geo map_image.png" width="1256"
+                    height="1044">
+                  </figure>
+                </td>
+                <td style="vertical-align:top;">Right click on any note on the note tree and select <i>Insert child note</i> → <i>Geo Map (beta)</i>.</td>
+              </tr>
+              <tr>
+                <th>2</th>
+                <td>
+                  <figure class="image image_resized" style="width:100%;">
+                    <img style="aspect-ratio:1720/1396;" src="1_Geo map_image.png" width="1720"
+                    height="1396">
+                  </figure>
+                </td>
+                <td style="vertical-align:top;">By default the map will be empty and will show the entire world.</td>
+              </tr>
+            </tbody>
+          </table>
+        </figure>
+        <h2>Repositioning the map</h2>
+        <ul>
+          <li>Click and drag the map in order to move across the map.</li>
+          <li>Use the mouse wheel, two-finger gesture on a touchpad or the +/- buttons
+            on the top-left to adjust the zoom.</li>
+        </ul>
+        <p>The position on the map and the zoom are saved inside the map note. When
+          visting again the note it will restore this position.</p>
+        <h2>Adding a marker using the map</h2>
+        <figure class="table" style="width:100%;">
+          <table class="ck-table-resized">
+            <colgroup>
+              <col style="width:5.05%;">
+                <col style="width:49.62%;">
+                  <col style="width:45.33%;">
+            </colgroup>
+            <tbody>
+              <tr>
+                <th>1</th>
+                <td>&nbsp;</td>
+                <td style="vertical-align:top;">
+                  <p>To create a marker, first navigate to the desired point on the map. Then
+                    press the
+                    <img class="image_resized" style="aspect-ratio:72/66;width:7.37%;"
+                    src="2_Geo map_image.png" width="72" height="66">button on the top-right of the map.</p>
+                  <p>If the button is not visible, make sure the button section is visible
+                    by pressing the chevron button (
+                    <img class="image_resized" style="aspect-ratio:72/66;width:7.51%;"
+                    src="3_Geo map_image.png" width="72" height="66">) in the top-right of the map.</p>
+                </td>
+              </tr>
+              <tr>
+                <th>2</th>
+                <td>
+                  <figure class="image image_resized" style="width:100%;">
+                    <img style="aspect-ratio:1730/416;" src="4_Geo map_image.png" width="1730"
+                    height="416">
+                  </figure>
+                  <p>&nbsp;</p>
+                </td>
+                <td style="vertical-align:top;">
+                  <p>Once pressed, the map will enter in the insert mode, as illustrated by
+                    the notification.</p>
+                  <p>Simply click the point on the map where to place the marker, or the Escape
+                    key to cancel.</p>
+                </td>
+              </tr>
+              <tr>
+                <th>3</th>
+                <td>
+                  <figure class="image">
+                    <img style="aspect-ratio:1586/404;" src="5_Geo map_image.png" width="1586"
+                    height="404">
+                  </figure>
+                  <p>&nbsp;</p>
+                </td>
+                <td>Enter the name of the marker/note to be created.&nbsp;</td>
+              </tr>
+              <tr>
+                <th>4</th>
+                <td>
+                  <figure class="image">
+                    <img style="aspect-ratio:1696/608;" src="6_Geo map_image.png" width="1696"
+                    height="608">
+                  </figure>
+                  <p>&nbsp;</p>
+                </td>
+                <td>Once confirmed, the marker will show up on the map and it will also be
+                  displayed as a child note of the map.</td>
+              </tr>
+            </tbody>
+          </table>
+        </figure>
+        <h2>Repositioning markers</h2>
+        <p>It's possible to reposition existing markers by simply drag and dropping
+          them to the new destination.</p>
+        <p>As soon as the mouse is released, the new position is saved.</p>
+        <p>If moved by mistake, there is currently no way to undo the change. If
+          the mouse was not yet released, it's possible to force a refresh of the
+          page (Ctrl+R or Meta+R) to cancel it.</p>
+        <h2>Adding the geolocation manually</h2>
+        <p>The location of a marker is stored in the <code>#geolocation</code> attribute
+          of the child notes:</p>
+        <figure class="image">
+          <img style="aspect-ratio:1288/278;" src="7_Geo map_image.png" width="1288"
+          height="278">
+        </figure>
+        <p>The value of the attribute is made up of the latitude and longitude separated
+          by a comma.</p>
+        <h3>Adding from Google Maps</h3>
+        <figure class="table">
+          <table>
+            <tbody>
+              <tr>
+                <th>1</th>
+                <td>
+                  <figure class="image image-style-align-center image_resized" style="width:100%;">
+                    <img style="aspect-ratio:732/918;" src="8_Geo map_image.png" width="732"
+                    height="918">
+                  </figure>
+                </td>
+                <td style="vertical-align:top;">
+                  <p>Go to Google Maps on the web and look for a desired location, right click
+                    on it and a context menu will show up.</p>
+                  <p>Simply click on the first item displaying the coordinates and they will
+                    be copied to clipboard.</p>
+                  <p>Then paste the value inside the text box into the <code>#geolocation</code> attribute
+                    of a child note of the map (don't forget to surround the value with a <code>"</code> character).</p>
+                </td>
+              </tr>
+              <tr>
+                <th>2</th>
+                <td>
+                  <figure class="image image_resized" style="width:100%;">
+                    <img style="aspect-ratio:518/84;" src="11_Geo map_image.png" width="518"
+                    height="84">
+                  </figure>
+                </td>
+                <td style="vertical-align:top;">
+                  <p>In Trilium, create a child note under the map.</p>
+                  <p>&nbsp;</p>
+                  <p>&nbsp;</p>
+                </td>
+              </tr>
+              <tr>
+                <th>3</th>
+                <td>
+                  <figure class="image image_resized" style="width:100%;">
+                    <img style="aspect-ratio:1074/276;" src="9_Geo map_image.png" width="1074"
+                    height="276">
+                  </figure>
+                </td>
+                <td style="vertical-align:top;">And then go to Owned Attributes and type <code>#geolocation="</code>, then
+                  paste from the clipboard as-is and then add the ending <code>"</code> character.
+                  Press Enter to confirm and the map should now be updated to contain the
+                  new note.</td>
+              </tr>
+            </tbody>
+          </table>
+        </figure>
+        <h3>Adding from OpenStreetMap</h3>
+        <p>Similarly to the Google Maps approach:</p>
+        <figure class="table" style="width:100%;">
+          <table class="ck-table-resized">
+            <colgroup>
+              <col style="width:4.65%;">
+                <col style="width:36.01%;">
+                  <col style="width:59.34%;">
+            </colgroup>
+            <tbody>
+              <tr>
+                <th>1</th>
+                <td>
+                  <figure class="image image_resized" style="width:100%;">
+                    <img style="aspect-ratio:562/454;" src="12_Geo map_image.png" width="562"
+                    height="454">
+                  </figure>
+                </td>
+                <td style="vertical-align:top;">Go to any location on openstreetmap.org and right click to bring up the
+                  context menu. Select the “Show address” item.</td>
+              </tr>
+              <tr>
+                <th>2</th>
+                <td>
+                  <figure class="image image_resized" style="width:100%;">
+                    <img style="aspect-ratio:696/480;" src="13_Geo map_image.png" width="696"
+                    height="480">
+                  </figure>
+                </td>
+                <td style="vertical-align:top;">
+                  <p>The address will be visible in the top-left of the screen, in the place
+                    of the search bar.</p>
+                  <p>Select the coordinates and copy them into the clipboard.</p>
+                </td>
+              </tr>
+              <tr>
+                <th>3</th>
+                <td>
+                  <figure class="image">
+                    <img style="aspect-ratio:640/276;" src="14_Geo map_image.png" width="640"
+                    height="276">
+                  </figure>
+                </td>
+                <td style="vertical-align:top;">Simply paste the value inside the text box into the <code>#geolocation</code> attribute
+                  of a child note of the map and then it should be displayed on the map.</td>
+              </tr>
+            </tbody>
+          </table>
+        </figure>
+        <h2>Adding GPS tracks (.gpx)</h2>
+        <p>Trilium has basic support for displaying GPS tracks on the geo map.</p>
+        <figure
+        class="table" style="width:100%;">
+          <table class="ck-table-resized">
+            <colgroup>
+              <col style="width:4.66%;">
+                <col style="width:36.79%;">
+                  <col style="width:58.55%;">
+            </colgroup>
+            <tbody>
+              <tr>
+                <th>1</th>
+                <td>
+                  <figure class="image">
+                    <img style="aspect-ratio:226/74;" src="17_Geo map_image.png" width="226"
+                    height="74">
+                  </figure>
+                </td>
+                <td style="vertical-align:top;">To add a track, simply drag &amp; drop a .gpx file inside the geo map
+                  in the note tree.</td>
+              </tr>
+              <tr>
+                <th>2</th>
+                <td>
+                  <figure class="image">
+                    <img style="aspect-ratio:322/222;" src="18_Geo map_image.png" width="322"
+                    height="222">
+                  </figure>
+                </td>
+                <td style="vertical-align:top;">In order for the file to be recognized as a GPS track, it needs to show
+                  up as <code>application/gpx+xml</code> in the <i>File type</i> field.</td>
+              </tr>
+              <tr>
+                <th>3</th>
+                <td>
+                  <figure class="image image_resized" style="width:100%;">
+                    <img style="aspect-ratio:620/530;" src="19_Geo map_image.png" width="620"
+                    height="530">
+                  </figure>
+                </td>
+                <td style="vertical-align:top;">
+                  <p>When going back to the map, the track should now be visible.</p>
+                  <p>The start and end points of the track are indicated by the two blue markers.</p>
+                  <p>&nbsp;</p>
+                </td>
+              </tr>
+            </tbody>
+          </table>
+          </figure>
+          <p>&nbsp;</p>
+          <p>&nbsp;</p>
+          <p>&nbsp;</p>
+          <p>&nbsp;</p>
+      </div>
+    </div>
+  </body>
+
+</html>

src/public/app/doc_notes/en/User Guide/User Guide/Working with notes/Exporting as PDF.html

@@ -0,0 +1,52 @@
+<html>
+  
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="stylesheet" href="../../style.css">
+    <base target="_parent">
+    <title data-trilium-title>Exporting as PDF</title>
+  </head>
+  
+  <body>
+    <div class="content">
+       <h1 data-trilium-h1>Exporting as PDF</h1>
+
+      <div class="ck-content">
+        <figure class="image image-style-align-right image_resized" style="width:47.17%;">
+          <img style="aspect-ratio:951/432;" src="1_Exporting as PDF_image.png"
+          width="951" height="432">
+        </figure>
+        <p>On the desktop application of Trilium it is possible to export a note
+          as PDF. On the server or PWA (mobile), the option is not available due
+          to technical constraints and it will be hidden.</p>
+        <p>To print a note, select the
+          <img src="Exporting as PDF_image.png" width="29"
+          height="31">button to the right of the note and select <i>Export as PDF</i>.</p>
+        <p>Afterwards you will be prompted to select where to save the PDF file.
+          Upon confirmation, the resulting PDF will be opened automatically.</p>
+        <p>Should you encounter any visual issues in the resulting PDF file (e.g.
+          a table does not fit properly, there is cut off text, etc.) feel free to
+          <a
+          href="#root/OeKBfN6JbMIq/jRV1MPt4mNSP/hrC6xn7hnDq5">report the issue</a>. In this case, it's best to offer a sample note (click
+            on the
+            <img src="Exporting as PDF_image.png" width="29" height="31">button, select Export note → This note and all of its descendants → HTML
+            in ZIP archive). Make sure not to accidentally leak any personal information.</p>
+        <h2>Landscape mode</h2>
+        <p>When exporting to PDF, there are no customizable settings such as page
+          orientation, size, etc. However, it is possible to specify a given note
+          to be printed as a PDF in landscape mode by adding the <code>#printLandscape</code> attribute
+          to it (see&nbsp;<a class="reference-link" href="#root/9QRytp0ZYFIf/PnO38wN0ffOA">Adding an attribute to a note</a>).</p>
+        <h2>Page size</h2>
+        <p>By default, the resulting PDF will be in Letter format. It is possible
+          to adjust it to another page size via the <code>#printPageSize</code> attribute,
+          with one of the following values: <code>A0</code>, <code>A1</code>, <code>A2</code>, <code>A3</code>, <code>A4</code>, <code>A5</code>, <code>A6</code>, <code>Legal</code>, <code>Letter</code>, <code>Tabloid</code>, <code>Ledger</code>.</p>
+        <h2>Keyboard shortcut</h2>
+        <p>It's possible to trigger the export to PDF from the keyboard by going
+          to&nbsp;<i>Keyboard shortcuts</i>&nbsp;and assigning a key combination
+          for the <code>exportAsPdf</code> action.</p>
+      </div>
+    </div>
+  </body>
+
+</html>

src/public/app/doc_notes/en/User Guide/index.html

@@ -0,0 +1,11 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html>
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+</head>
+<frameset cols="25%,75%">
+    <frame name="navigation" src="navigation.html">
+    <frame name="detail" src="User%20Guide/Types%20of%20notes/Geo%20map.html">
+</frameset>
+</html>

src/public/app/doc_notes/en/User Guide/navigation.html

@@ -0,0 +1,47 @@
+<html>
+  
+  <head>
+    <meta charset="utf-8">
+    <link rel="stylesheet" href="style.css">
+  </head>
+  
+  <body>
+    <ul>
+      <li>User Guide
+        <ul>
+          <li>Types of notes
+            <ul>
+              <li><a href="User%20Guide/Types%20of%20notes/Geo%20map.html" target="detail">Geo map</a>
+              </li>
+            </ul>
+          </li>
+          <li>Working with notes
+            <ul>
+              <li><a href="User%20Guide/Working%20with%20notes/Exporting%20as%20PDF.html"
+                target="detail">Exporting as PDF</a>
+              </li>
+            </ul>
+          </li>
+          <li>Power users
+            <ul>
+              <li>Theme development
+                <ul>
+                  <li><a href="User%20Guide/Power%20users/Theme%20development/Creating%20a%20custom%20theme.html"
+                    target="detail">Creating a custom theme</a>
+                  </li>
+                  <li><a href="User%20Guide/Power%20users/Theme%20development/Theme%20base%20(legacy%20vs.%20next).html"
+                    target="detail">Theme base (legacy vs. next)</a>
+                  </li>
+                  <li><a href="User%20Guide/Power%20users/Theme%20development/Reference.html"
+                    target="detail">Reference</a>
+                  </li>
+                </ul>
+              </li>
+            </ul>
+          </li>
+        </ul>
+      </li>
+    </ul>
+  </body>
+
+</html>

src/public/app/doc_notes/en/User Guide/style.css

@@ -0,0 +1,567 @@
+/* !!!!!! TRILIUM CUSTOM CHANGES !!!!!! */
+
+.printed-content .ck-widget__selection-handle, .printed-content .ck-widget__type-around { /* gets rid of triangles: https://github.com/zadam/trilium/issues/1129 */
+    display: none;
+}
+
+.page-break {
+    page-break-after: always;
+}
+
+.printed-content .page-break:after,
+.printed-content .page-break > * {
+    display: none !important;
+}
+
+.ck-content li p {
+    margin: 0 !important;
+}
+
+/*
+ * CKEditor 5 (v41.0.0) content styles.
+ * Generated on Fri, 26 Jan 2024 10:23:49 GMT.
+ * For more information, check out https://ckeditor.com/docs/ckeditor5/latest/installation/advanced/content-styles.html
+ */
+
+:root {
+    --ck-color-image-caption-background: hsl(0, 0%, 97%);
+    --ck-color-image-caption-text: hsl(0, 0%, 20%);
+    --ck-color-mention-background: hsla(341, 100%, 30%, 0.1);
+    --ck-color-mention-text: hsl(341, 100%, 30%);
+    --ck-color-selector-caption-background: hsl(0, 0%, 97%);
+    --ck-color-selector-caption-text: hsl(0, 0%, 20%);
+    --ck-highlight-marker-blue: hsl(201, 97%, 72%);
+    --ck-highlight-marker-green: hsl(120, 93%, 68%);
+    --ck-highlight-marker-pink: hsl(345, 96%, 73%);
+    --ck-highlight-marker-yellow: hsl(60, 97%, 73%);
+    --ck-highlight-pen-green: hsl(112, 100%, 27%);
+    --ck-highlight-pen-red: hsl(0, 85%, 49%);
+    --ck-image-style-spacing: 1.5em;
+    --ck-inline-image-style-spacing: calc(var(--ck-image-style-spacing) / 2);
+    --ck-todo-list-checkmark-size: 16px;
+}
+
+/* @ckeditor/ckeditor5-table/theme/tablecolumnresize.css */
+.ck-content .table .ck-table-resized {
+    table-layout: fixed;
+}
+/* @ckeditor/ckeditor5-table/theme/tablecolumnresize.css */
+.ck-content .table table {
+    overflow: hidden;
+}
+/* @ckeditor/ckeditor5-table/theme/tablecolumnresize.css */
+.ck-content .table td,
+.ck-content .table th {
+    overflow-wrap: break-word;
+    position: relative;
+}
+/* @ckeditor/ckeditor5-table/theme/table.css */
+.ck-content .table {
+    margin: 0.9em auto;
+    display: table;
+}
+/* @ckeditor/ckeditor5-table/theme/table.css */
+.ck-content .table table {
+    border-collapse: collapse;
+    border-spacing: 0;
+    width: 100%;
+    height: 100%;
+    border: 1px double hsl(0, 0%, 70%);
+}
+/* @ckeditor/ckeditor5-table/theme/table.css */
+.ck-content .table table td,
+.ck-content .table table th {
+    min-width: 2em;
+    padding: .4em;
+    border: 1px solid hsl(0, 0%, 75%);
+}
+/* @ckeditor/ckeditor5-table/theme/table.css */
+.ck-content .table table th {
+    font-weight: bold;
+    background: hsla(0, 0%, 0%, 5%);
+}
+/* @ckeditor/ckeditor5-table/theme/table.css */
+.ck-content[dir="rtl"] .table th {
+    text-align: right;
+}
+/* @ckeditor/ckeditor5-table/theme/table.css */
+.ck-content[dir="ltr"] .table th {
+    text-align: left;
+}
+/* @ckeditor/ckeditor5-table/theme/tablecaption.css */
+.ck-content .table > figcaption {
+    display: table-caption;
+    caption-side: top;
+    word-break: break-word;
+    text-align: center;
+    color: var(--ck-color-selector-caption-text);
+    background-color: var(--ck-color-selector-caption-background);
+    padding: .6em;
+    font-size: .75em;
+    outline-offset: -1px;
+}
+/* @ckeditor/ckeditor5-page-break/theme/pagebreak.css */
+.ck-content .page-break {
+    position: relative;
+    clear: both;
+    padding: 5px 0;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+/* @ckeditor/ckeditor5-page-break/theme/pagebreak.css */
+.ck-content .page-break::after {
+    content: '';
+    position: absolute;
+    border-bottom: 2px dashed hsl(0, 0%, 77%);
+    width: 100%;
+}
+/* @ckeditor/ckeditor5-page-break/theme/pagebreak.css */
+.ck-content .page-break__label {
+    position: relative;
+    z-index: 1;
+    padding: .3em .6em;
+    display: block;
+    text-transform: uppercase;
+    border: 1px solid hsl(0, 0%, 77%);
+    border-radius: 2px;
+    font-family: Helvetica, Arial, Tahoma, Verdana, Sans-Serif;
+    font-size: 0.75em;
+    font-weight: bold;
+    color: hsl(0, 0%, 20%);
+    background: hsl(0, 0%, 100%);
+    box-shadow: 2px 2px 1px hsla(0, 0%, 0%, 0.15);
+    -webkit-user-select: none;
+    -moz-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+}
+/* @ckeditor/ckeditor5-media-embed/theme/mediaembed.css */
+.ck-content .media {
+    clear: both;
+    margin: 0.9em 0;
+    display: block;
+    min-width: 15em;
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-content .todo-list {
+    list-style: none;
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-content .todo-list li {
+    position: relative;
+    margin-bottom: 5px;
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-content .todo-list li .todo-list {
+    margin-top: 5px;
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-content .todo-list .todo-list__label > input {
+    -webkit-appearance: none;
+    display: inline-block;
+    position: relative;
+    width: var(--ck-todo-list-checkmark-size);
+    height: var(--ck-todo-list-checkmark-size);
+    vertical-align: middle;
+    border: 0;
+    left: -25px;
+    margin-right: -15px;
+    right: 0;
+    margin-left: 0;
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-content[dir=rtl] .todo-list .todo-list__label > input {
+    left: 0;
+    margin-right: 0;
+    right: -25px;
+    margin-left: -15px;
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-content .todo-list .todo-list__label > input::before {
+    display: block;
+    position: absolute;
+    box-sizing: border-box;
+    content: '';
+    width: 100%;
+    height: 100%;
+    border: 1px solid hsl(0, 0%, 20%);
+    border-radius: 2px;
+    transition: 250ms ease-in-out box-shadow;
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-content .todo-list .todo-list__label > input::after {
+    display: block;
+    position: absolute;
+    box-sizing: content-box;
+    pointer-events: none;
+    content: '';
+    left: calc( var(--ck-todo-list-checkmark-size) / 3 );
+    top: calc( var(--ck-todo-list-checkmark-size) / 5.3 );
+    width: calc( var(--ck-todo-list-checkmark-size) / 5.3 );
+    height: calc( var(--ck-todo-list-checkmark-size) / 2.6 );
+    border-style: solid;
+    border-color: transparent;
+    border-width: 0 calc( var(--ck-todo-list-checkmark-size) / 8 ) calc( var(--ck-todo-list-checkmark-size) / 8 ) 0;
+    transform: rotate(45deg);
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-content .todo-list .todo-list__label > input[checked]::before {
+    background: hsl(126, 64%, 41%);
+    border-color: hsl(126, 64%, 41%);
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-content .todo-list .todo-list__label > input[checked]::after {
+    border-color: hsl(0, 0%, 100%);
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-content .todo-list .todo-list__label .todo-list__label__description {
+    vertical-align: middle;
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-content .todo-list .todo-list__label.todo-list__label_without-description input[type=checkbox] {
+    position: absolute;
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-editor__editable.ck-content .todo-list .todo-list__label > input,
+.ck-editor__editable.ck-content .todo-list .todo-list__label > span[contenteditable=false] > input {
+    cursor: pointer;
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-editor__editable.ck-content .todo-list .todo-list__label > input:hover::before, .ck-editor__editable.ck-content .todo-list .todo-list__label > span[contenteditable=false] > input:hover::before {
+    box-shadow: 0 0 0 5px hsla(0, 0%, 0%, 0.1);
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-editor__editable.ck-content .todo-list .todo-list__label > span[contenteditable=false] > input {
+    -webkit-appearance: none;
+    display: inline-block;
+    position: relative;
+    width: var(--ck-todo-list-checkmark-size);
+    height: var(--ck-todo-list-checkmark-size);
+    vertical-align: middle;
+    border: 0;
+    left: -25px;
+    margin-right: -15px;
+    right: 0;
+    margin-left: 0;
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-editor__editable.ck-content[dir=rtl] .todo-list .todo-list__label > span[contenteditable=false] > input {
+    left: 0;
+    margin-right: 0;
+    right: -25px;
+    margin-left: -15px;
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-editor__editable.ck-content .todo-list .todo-list__label > span[contenteditable=false] > input::before {
+    display: block;
+    position: absolute;
+    box-sizing: border-box;
+    content: '';
+    width: 100%;
+    height: 100%;
+    border: 1px solid hsl(0, 0%, 20%);
+    border-radius: 2px;
+    transition: 250ms ease-in-out box-shadow;
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-editor__editable.ck-content .todo-list .todo-list__label > span[contenteditable=false] > input::after {
+    display: block;
+    position: absolute;
+    box-sizing: content-box;
+    pointer-events: none;
+    content: '';
+    left: calc( var(--ck-todo-list-checkmark-size) / 3 );
+    top: calc( var(--ck-todo-list-checkmark-size) / 5.3 );
+    width: calc( var(--ck-todo-list-checkmark-size) / 5.3 );
+    height: calc( var(--ck-todo-list-checkmark-size) / 2.6 );
+    border-style: solid;
+    border-color: transparent;
+    border-width: 0 calc( var(--ck-todo-list-checkmark-size) / 8 ) calc( var(--ck-todo-list-checkmark-size) / 8 ) 0;
+    transform: rotate(45deg);
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-editor__editable.ck-content .todo-list .todo-list__label > span[contenteditable=false] > input[checked]::before {
+    background: hsl(126, 64%, 41%);
+    border-color: hsl(126, 64%, 41%);
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-editor__editable.ck-content .todo-list .todo-list__label > span[contenteditable=false] > input[checked]::after {
+    border-color: hsl(0, 0%, 100%);
+}
+/* @ckeditor/ckeditor5-list/theme/todolist.css */
+.ck-editor__editable.ck-content .todo-list .todo-list__label.todo-list__label_without-description input[type=checkbox] {
+    position: absolute;
+}
+/* @ckeditor/ckeditor5-list/theme/list.css */
+.ck-content ol {
+    list-style-type: decimal;
+}
+/* @ckeditor/ckeditor5-list/theme/list.css */
+.ck-content ol ol {
+    list-style-type: lower-latin;
+}
+/* @ckeditor/ckeditor5-list/theme/list.css */
+.ck-content ol ol ol {
+    list-style-type: lower-roman;
+}
+/* @ckeditor/ckeditor5-list/theme/list.css */
+.ck-content ol ol ol ol {
+    list-style-type: upper-latin;
+}
+/* @ckeditor/ckeditor5-list/theme/list.css */
+.ck-content ol ol ol ol ol {
+    list-style-type: upper-roman;
+}
+/* @ckeditor/ckeditor5-list/theme/list.css */
+.ck-content ul {
+    list-style-type: disc;
+}
+/* @ckeditor/ckeditor5-list/theme/list.css */
+.ck-content ul ul {
+    list-style-type: circle;
+}
+/* @ckeditor/ckeditor5-list/theme/list.css */
+.ck-content ul ul ul {
+    list-style-type: square;
+}
+/* @ckeditor/ckeditor5-list/theme/list.css */
+.ck-content ul ul ul ul {
+    list-style-type: square;
+}
+/* @ckeditor/ckeditor5-image/theme/image.css */
+.ck-content .image {
+    display: table;
+    clear: both;
+    text-align: center;
+    margin: 0.9em auto;
+    min-width: 50px;
+}
+/* @ckeditor/ckeditor5-image/theme/image.css */
+.ck-content .image img {
+    display: block;
+    margin: 0 auto;
+    max-width: 100%;
+    min-width: 100%;
+    height: auto;
+}
+/* @ckeditor/ckeditor5-image/theme/image.css */
+.ck-content .image-inline {
+    /*
+     * Normally, the .image-inline would have "display: inline-block" and "img { width: 100% }" (to follow the wrapper while resizing).;
+     * Unfortunately, together with "srcset", it gets automatically stretched up to the width of the editing root.
+     * This strange behavior does not happen with inline-flex.
+     */
+    display: inline-flex;
+    max-width: 100%;
+    align-items: flex-start;
+}
+/* @ckeditor/ckeditor5-image/theme/image.css */
+.ck-content .image-inline picture {
+    display: flex;
+}
+/* @ckeditor/ckeditor5-image/theme/image.css */
+.ck-content .image-inline picture,
+.ck-content .image-inline img {
+    flex-grow: 1;
+    flex-shrink: 1;
+    max-width: 100%;
+}
+/* @ckeditor/ckeditor5-image/theme/imageresize.css */
+.ck-content img.image_resized {
+    height: auto;
+}
+/* @ckeditor/ckeditor5-image/theme/imageresize.css */
+.ck-content .image.image_resized {
+    max-width: 100%;
+    display: block;
+    box-sizing: border-box;
+}
+/* @ckeditor/ckeditor5-image/theme/imageresize.css */
+.ck-content .image.image_resized img {
+    width: 100%;
+}
+/* @ckeditor/ckeditor5-image/theme/imageresize.css */
+.ck-content .image.image_resized > figcaption {
+    display: block;
+}
+/* @ckeditor/ckeditor5-image/theme/imagecaption.css */
+.ck-content .image > figcaption {
+    display: table-caption;
+    caption-side: bottom;
+    word-break: break-word;
+    color: var(--ck-color-image-caption-text);
+    background-color: var(--ck-color-image-caption-background);
+    padding: .6em;
+    font-size: .75em;
+    outline-offset: -1px;
+}
+/* @ckeditor/ckeditor5-image/theme/imagestyle.css */
+.ck-content .image-style-block-align-left,
+.ck-content .image-style-block-align-right {
+    max-width: calc(100% - var(--ck-image-style-spacing));
+}
+/* @ckeditor/ckeditor5-image/theme/imagestyle.css */
+.ck-content .image-style-align-left,
+.ck-content .image-style-align-right {
+    clear: none;
+}
+/* @ckeditor/ckeditor5-image/theme/imagestyle.css */
+.ck-content .image-style-side {
+    float: right;
+    margin-left: var(--ck-image-style-spacing);
+    max-width: 50%;
+}
+/* @ckeditor/ckeditor5-image/theme/imagestyle.css */
+.ck-content .image-style-align-left {
+    float: left;
+    margin-right: var(--ck-image-style-spacing);
+}
+/* @ckeditor/ckeditor5-image/theme/imagestyle.css */
+.ck-content .image-style-align-center {
+    margin-left: auto;
+    margin-right: auto;
+}
+/* @ckeditor/ckeditor5-image/theme/imagestyle.css */
+.ck-content .image-style-align-right {
+    float: right;
+    margin-left: var(--ck-image-style-spacing);
+}
+/* @ckeditor/ckeditor5-image/theme/imagestyle.css */
+.ck-content .image-style-block-align-right {
+    margin-right: 0;
+    margin-left: auto;
+}
+/* @ckeditor/ckeditor5-image/theme/imagestyle.css */
+.ck-content .image-style-block-align-left {
+    margin-left: 0;
+    margin-right: auto;
+}
+/* @ckeditor/ckeditor5-image/theme/imagestyle.css */
+.ck-content p + .image-style-align-left,
+.ck-content p + .image-style-align-right,
+.ck-content p + .image-style-side {
+    margin-top: 0;
+}
+/* @ckeditor/ckeditor5-image/theme/imagestyle.css */
+.ck-content .image-inline.image-style-align-left,
+.ck-content .image-inline.image-style-align-right {
+    margin-top: var(--ck-inline-image-style-spacing);
+    margin-bottom: var(--ck-inline-image-style-spacing);
+}
+/* @ckeditor/ckeditor5-image/theme/imagestyle.css */
+.ck-content .image-inline.image-style-align-left {
+    margin-right: var(--ck-inline-image-style-spacing);
+}
+/* @ckeditor/ckeditor5-image/theme/imagestyle.css */
+.ck-content .image-inline.image-style-align-right {
+    margin-left: var(--ck-inline-image-style-spacing);
+}
+/* @ckeditor/ckeditor5-highlight/theme/highlight.css */
+.ck-content .marker-yellow {
+    background-color: var(--ck-highlight-marker-yellow);
+}
+/* @ckeditor/ckeditor5-highlight/theme/highlight.css */
+.ck-content .marker-green {
+    background-color: var(--ck-highlight-marker-green);
+}
+/* @ckeditor/ckeditor5-highlight/theme/highlight.css */
+.ck-content .marker-pink {
+    background-color: var(--ck-highlight-marker-pink);
+}
+/* @ckeditor/ckeditor5-highlight/theme/highlight.css */
+.ck-content .marker-blue {
+    background-color: var(--ck-highlight-marker-blue);
+}
+/* @ckeditor/ckeditor5-highlight/theme/highlight.css */
+.ck-content .pen-red {
+    color: var(--ck-highlight-pen-red);
+    background-color: transparent;
+}
+/* @ckeditor/ckeditor5-highlight/theme/highlight.css */
+.ck-content .pen-green {
+    color: var(--ck-highlight-pen-green);
+    background-color: transparent;
+}
+/* @ckeditor/ckeditor5-block-quote/theme/blockquote.css */
+.ck-content blockquote {
+    overflow: hidden;
+    padding-right: 1.5em;
+    padding-left: 1.5em;
+    margin-left: 0;
+    margin-right: 0;
+    font-style: italic;
+    border-left: solid 5px hsl(0, 0%, 80%);
+}
+/* @ckeditor/ckeditor5-block-quote/theme/blockquote.css */
+.ck-content[dir="rtl"] blockquote {
+    border-left: 0;
+    border-right: solid 5px hsl(0, 0%, 80%);
+}
+/* @ckeditor/ckeditor5-basic-styles/theme/code.css */
+.ck-content code {
+    background-color: hsla(0, 0%, 78%, 0.3);
+    padding: .15em;
+    border-radius: 2px;
+}
+/* @ckeditor/ckeditor5-font/theme/fontsize.css */
+.ck-content .text-tiny {
+    font-size: .7em;
+}
+/* @ckeditor/ckeditor5-font/theme/fontsize.css */
+.ck-content .text-small {
+    font-size: .85em;
+}
+/* @ckeditor/ckeditor5-font/theme/fontsize.css */
+.ck-content .text-big {
+    font-size: 1.4em;
+}
+/* @ckeditor/ckeditor5-font/theme/fontsize.css */
+.ck-content .text-huge {
+    font-size: 1.8em;
+}
+/* @ckeditor/ckeditor5-mention/theme/mention.css */
+.ck-content .mention {
+    background: var(--ck-color-mention-background);
+    color: var(--ck-color-mention-text);
+}
+/* @ckeditor/ckeditor5-horizontal-line/theme/horizontalline.css */
+.ck-content hr {
+    margin: 15px 0;
+    height: 4px;
+    background: hsl(0, 0%, 87%);
+    border: 0;
+}
+/* @ckeditor/ckeditor5-code-block/theme/codeblock.css */
+.ck-content pre {
+    padding: 1em;
+    text-align: left;
+    direction: ltr;
+    tab-size: 4;
+    white-space: pre-wrap;
+    font-style: normal;
+    min-width: 200px;
+    border: 0px;
+    border-radius: 6px;
+    box-shadow: 1px 1px 6px rgba(0, 0, 0, 0.2);
+}
+.ck-content pre:not(.hljs) {
+    color: hsl(0, 0%, 20.8%);    
+    background: hsla(0, 0%, 78%, 0.3);
+}
+/* @ckeditor/ckeditor5-code-block/theme/codeblock.css */
+.ck-content pre code {
+    background: unset;
+    padding: 0;
+    border-radius: 0;
+}
+@media print {
+    /* @ckeditor/ckeditor5-page-break/theme/pagebreak.css */
+    .ck-content .page-break {
+        padding: 0;
+    }
+    /* @ckeditor/ckeditor5-page-break/theme/pagebreak.css */
+    .ck-content .page-break::after {
+        display: none;
+    }
+}

src/public/app/layouts/desktop_layout.js

@@ -86,6 +86,7 @@ import ClassicEditorToolbar from "../widgets/ribbon_widgets/classic_editor_toolb
 import options from "../services/options.js";
 import utils from "../services/utils.js";
 import GeoMapButtons from "../widgets/floating_buttons/geo_map_button.js";
+import ContextualHelpButton from "../widgets/floating_buttons/help_button.js";
 
 export default class DesktopLayout {
     constructor(customWidgets) {
@@ -205,6 +206,7 @@ export default class DesktopLayout {
                                                                 .child(new CopyImageReferenceButton())
                                                                 .child(new SvgExportButton())
                                                                 .child(new BacklinksWidget())
+                                                                .child(new ContextualHelpButton())
                                                                 .child(new HideFloatingButtonsButton())
                                                         )
                                                         .child(new MermaidWidget())

src/public/app/menus/tree_context_menu.ts

@@ -52,7 +52,7 @@ export default class TreeContextMenu implements SelectMenuItemEventListener<Tree
         const noSelectedNotes = selNodes.length === 0 || (selNodes.length === 1 && selNodes[0] === this.node);
 
         const notSearch = note?.type !== "search";
-        const notOptions = !note?.noteId.startsWith("_options");
+        const notOptionsOrHelp = !note?.noteId.startsWith("_options") && !note?.noteId.startsWith("_help");
         const parentNotSearch = !parentNote || parentNote.type !== "search";
         const insertNoteAfterEnabled = isNotRoot && !isHoisted && parentNotSearch;
 
@@ -80,7 +80,7 @@ export default class TreeContextMenu implements SelectMenuItemEventListener<Tree
                 command: "insertNoteAfter",
                 uiIcon: "bx bx-plus",
                 items: insertNoteAfterEnabled ? await noteTypesService.getNoteTypeItems("insertNoteAfter") : null,
-                enabled: insertNoteAfterEnabled && noSelectedNotes && notOptions
+                enabled: insertNoteAfterEnabled && noSelectedNotes && notOptionsOrHelp
             },
 
             {
@@ -88,7 +88,7 @@ export default class TreeContextMenu implements SelectMenuItemEventListener<Tree
                 command: "insertChildNote",
                 uiIcon: "bx bx-plus",
                 items: notSearch ? await noteTypesService.getNoteTypeItems("insertChildNote") : null,
-                enabled: notSearch && noSelectedNotes && notOptions
+                enabled: notSearch && noSelectedNotes && notOptionsOrHelp
             },
 
             { title: "----" },
@@ -112,14 +112,14 @@ export default class TreeContextMenu implements SelectMenuItemEventListener<Tree
                         title: `${t("tree-context-menu.edit-branch-prefix")} <kbd data-command="editBranchPrefix"></kbd>`,
                         command: "editBranchPrefix",
                         uiIcon: "bx bx-rename",
-                        enabled: isNotRoot && parentNotSearch && noSelectedNotes && notOptions
+                        enabled: isNotRoot && parentNotSearch && noSelectedNotes && notOptionsOrHelp
                     },
-                    { title: t("tree-context-menu.convert-to-attachment"), command: "convertNoteToAttachment", uiIcon: "bx bx-paperclip", enabled: isNotRoot && !isHoisted && notOptions },
+                    { title: t("tree-context-menu.convert-to-attachment"), command: "convertNoteToAttachment", uiIcon: "bx bx-paperclip", enabled: isNotRoot && !isHoisted && notOptionsOrHelp },
                     {
                         title: `${t("tree-context-menu.duplicate-subtree")} <kbd data-command="duplicateSubtree">`,
                         command: "duplicateSubtree",
                         uiIcon: "bx bx-outline",
-                        enabled: parentNotSearch && isNotRoot && !isHoisted && notOptions
+                        enabled: parentNotSearch && isNotRoot && !isHoisted && notOptionsOrHelp
                     },
 
                     { title: "----" },
@@ -136,7 +136,7 @@ export default class TreeContextMenu implements SelectMenuItemEventListener<Tree
                     { title: "----" },
 
                     { title: t("tree-context-menu.copy-note-path-to-clipboard"), command: "copyNotePathToClipboard", uiIcon: "bx bx-directions", enabled: true },
-                    { title: t("tree-context-menu.recent-changes-in-subtree"), command: "recentChangesInSubtree", uiIcon: "bx bx-history", enabled: noSelectedNotes && notOptions }
+                    { title: t("tree-context-menu.recent-changes-in-subtree"), command: "recentChangesInSubtree", uiIcon: "bx bx-history", enabled: noSelectedNotes && notOptionsOrHelp }
                 ]
             },
 
@@ -178,14 +178,14 @@ export default class TreeContextMenu implements SelectMenuItemEventListener<Tree
                 title: `${t("tree-context-menu.delete")} <kbd data-command="deleteNotes"></kbd>`,
                 command: "deleteNotes",
                 uiIcon: "bx bx-trash destructive-action-icon",
-                enabled: isNotRoot && !isHoisted && parentNotSearch && notOptions
+                enabled: isNotRoot && !isHoisted && parentNotSearch && notOptionsOrHelp
             },
 
             { title: "----" },
 
-            { title: t("tree-context-menu.import-into-note"), command: "importIntoNote", uiIcon: "bx bx-import", enabled: notSearch && noSelectedNotes && notOptions },
+            { title: t("tree-context-menu.import-into-note"), command: "importIntoNote", uiIcon: "bx bx-import", enabled: notSearch && noSelectedNotes && notOptionsOrHelp },
 
-            { title: t("tree-context-menu.export"), command: "exportNote", uiIcon: "bx bx-export", enabled: notSearch && noSelectedNotes && notOptions },
+            { title: t("tree-context-menu.export"), command: "exportNote", uiIcon: "bx bx-export", enabled: notSearch && noSelectedNotes && notOptionsOrHelp },
 
             { title: "----" },
 

src/public/app/services/attribute_renderer.ts

@@ -79,7 +79,7 @@ async function renderAttributes(attributes: FAttribute[], renderIsInheritable: b
     return $container;
 }
 
-const HIDDEN_ATTRIBUTES = ["originalFileName", "fileSize", "template", "inherit", "cssClass", "iconClass", "pageSize", "viewType", "geolocation"];
+const HIDDEN_ATTRIBUTES = [ "originalFileName", "fileSize", "template", "inherit", "cssClass", "iconClass", "pageSize", "viewType", "geolocation", "docName" ];
 
 async function renderNormalAttributes(note: FNote) {
     const promotedDefinitionAttributes = note.getPromotedDefinitionAttributes();

src/public/app/services/link.ts

@@ -25,14 +25,29 @@ async function getLinkIcon(noteId: string, viewMode: ViewMode | undefined) {
     return icon;
 }
 
-type ViewMode = "default" | "source" | "attachments" | string;
+// TODO: Remove `string` once all the view modes have been mapped.
+type ViewMode = "default" | "source" | "attachments" | "contextual-help" | string;
 
 export interface ViewScope {
+    /**
+     * - "source", when viewing the source code of a note.
+     * - "attachments", when viewing the attachments of a note.
+     * - "contextual-help", if the current view represents a help window that was opened to the side of the main content.
+     * - "default", otherwise.
+     */
     viewMode?: ViewMode;
     attachmentId?: string;
     readOnlyTemporarilyDisabled?: boolean;
     highlightsListPreviousVisible?: boolean;
     highlightsListTemporarilyHidden?: boolean;
+    tocTemporarilyHidden?: boolean;
+    /*
+     * The reason for adding tocPreviousVisible is to record whether the previous state of the toc is hidden or displayed,
+     * and then let it be displayed/hidden at the initial time. If there is no such value,
+     * when the right panel needs to display highlighttext but not toc, every time the note content is changed,
+     * toc will appear and then close immediately, because getToc(html) function will consume time
+     */
+    tocPreviousVisible?: boolean;
 }
 
 interface CreateLinkOptions {

src/public/app/services/note_create.ts

@@ -22,11 +22,7 @@ interface CreateNoteOpts {
     focus?: "title" | "content";
     target?: string;
     targetBranchId?: string;
-    textEditor?: {
+    textEditor?: TextEditor;
-        // TODO: Replace with interface once note_context.js is converted.
-        getSelectedHtml(): string;
-        removeSelection(): void;
-    };
 }
 
 interface Response {

src/public/app/types.d.ts

@@ -239,6 +239,9 @@ declare global {
         },
         getData(): string;
         setData(data: string): void;
+        getSelectedHtml(): string;
+        removeSelection(): void;
+        sourceElement: HTMLElement;
     }
 
     interface MentionItem {

src/public/app/widgets/buttons/global_menu.ts

@@ -226,6 +226,12 @@ const TPL = `
             <kbd data-command="showHelp"></kbd>
         </li>
 
+        <li class="dropdown-item show-help-button" data-trigger-command="showCheatsheet">
+            <span class="bx bxs-keyboard"></span>
+            ${t("global_menu.show-cheatsheet")}
+            <kbd data-command="showCheatsheet"></kbd>
+        </li>
+
         <li class="dropdown-item show-about-dialog-button">
             <span class="bx bx-info-circle"></span>
             ${t("global_menu.about")}

src/public/app/widgets/containers/split_note_container.js

@@ -61,7 +61,7 @@ export default class SplitNoteContainer extends FlexContainer {
         await appContext.tabManager.activateNoteContext(noteContext.ntxId);
 
         if (notePath) {
-            await noteContext.setNote(notePath, viewScope);
+            await noteContext.setNote(notePath, { viewScope });
         } else {
             await noteContext.setEmpty();
         }

src/public/app/widgets/dialogs/help.ts

@@ -153,7 +153,7 @@ export default class HelpDialog extends BasicWidget {
         this.$widget = $(TPL);
     }
 
-    showHelpEvent() {
+    showCheatsheetEvent() {
         utils.openDialog(this.$widget);
     }
 }

src/public/app/widgets/floating_buttons/floating_buttons.js

@@ -22,7 +22,7 @@ const TPL = `
         }
 
         .floating-buttons-children > *:not(.hidden-int):not(.no-content-hidden) {
-            margin-left: 10px;
+            margin: 2px;
         }
 
         .floating-buttons-children > button, .floating-buttons-children .floating-button {

src/public/app/widgets/floating_buttons/geo_map_button.ts

@@ -5,6 +5,7 @@ const TPL = `\
 <div class="geo-map-buttons">
     <style>
         .geo-map-buttons {
+            contain: none;
             display: flex;
             gap: 10px;
         }
@@ -12,13 +13,6 @@ const TPL = `\
         .leaflet-pane {
             z-index: 50;
         }
-
-        .geo-map-buttons {
-            contain: none;
-            background: var(--main-background-color);
-            box-shadow: 0px 10px 20px rgba(0, 0, 0, var(--dropdown-shadow-opacity));
-            border-radius: 4px;
-        }
     </style>
 
     <button type="button"

src/public/app/widgets/floating_buttons/help_button.ts

@@ -0,0 +1,76 @@
+import appContext from "../../components/app_context.js";
+import type { NoteType } from "../../entities/fnote.js";
+import { t } from "../../services/i18n.js";
+import type { ViewScope } from "../../services/link.js";
+import NoteContextAwareWidget from "../note_context_aware_widget.js";
+
+const TPL = `
+<button class="open-contextual-help-button" title="${t("help-button.title")}">
+    <span class="bx bx-help-circle"></span>
+</button>
+`;
+
+const byNoteType: Record<NoteType, string | null> = {
+    book: null,
+    canvas: null,
+    code: null,
+    contentWidget: null,
+    doc: null,
+    file: null,
+    geoMap: "foPEtsL51pD2",
+    image: null,
+    launcher: null,
+    mermaid: null,
+    mindMap: null,
+    noteMap: null,
+    relationMap: null,
+    render: null,
+    search: null,
+    text: null,
+    webView: null
+};
+
+export default class ContextualHelpButton extends NoteContextAwareWidget {
+
+    private helpNoteIdToOpen?: string | null;
+
+    isEnabled() {
+        this.helpNoteIdToOpen = null;
+
+        if (!super.isEnabled()) {
+            return false;
+        }
+
+        if (this.note && byNoteType[this.note.type]) {
+            this.helpNoteIdToOpen = byNoteType[this.note.type];
+        }
+
+        return !!this.helpNoteIdToOpen;
+    }
+
+    doRender() {
+        this.$widget = $(TPL);
+        this.$widget.on("click", () => {
+            const subContexts = appContext.tabManager.getActiveContext().getSubContexts();
+            const targetNote = `_help_${this.helpNoteIdToOpen}`;
+            const helpSubcontext = subContexts.find((s) => s.viewScope?.viewMode === "contextual-help");
+            const viewScope: ViewScope = {
+                viewMode: "contextual-help",
+            };
+            if (!helpSubcontext) {
+                // The help is not already open, open a new split with it.
+                const { ntxId } = subContexts[subContexts.length - 1];
+                this.triggerCommand("openNewNoteSplit", {
+                    ntxId,
+                    notePath: targetNote,
+                    hoistedNoteId: "_help",
+                    viewScope
+                })
+            } else {
+                // There is already a help window open, make sure it opens on the right note.
+                helpSubcontext.setNote(targetNote, { viewScope });
+            }
+        });
+    }
+
+}

src/public/app/widgets/note_detail.ts

@@ -4,7 +4,7 @@ import protectedSessionHolder from "../services/protected_session_holder.js";
 import SpacedUpdate from "../services/spaced_update.js";
 import server from "../services/server.js";
 import libraryLoader from "../services/library_loader.js";
-import appContext from "../components/app_context.js";
+import appContext, { type CommandListenerData, type EventData } from "../components/app_context.js";
 import keyboardActionsService from "../services/keyboard_actions.js";
 import noteCreateService from "../services/note_create.js";
 import attributeService from "../services/attributes.js";
@@ -33,6 +33,8 @@ import MindMapWidget from "./type_widgets/mind_map.js";
 import { getStylesheetUrl, isSyntaxHighlightEnabled } from "../services/syntax_highlight.js";
 import GeoMapTypeWidget from "./type_widgets/geo_map.js";
 import utils from "../services/utils.js";
+import type { NoteType } from "../entities/fnote.js";
+import type TypeWidget from "./type_widgets/type_widget.js";
 
 const TPL = `
 <div class="note-detail">
@@ -73,14 +75,34 @@ const typeWidgetClasses = {
     geoMap: GeoMapTypeWidget
 };
 
+/**
+ * A `NoteType` altered by the note detail widget, taking into consideration whether the note is editable or not and adding special note types such as an empty one,
+ * for protected session or attachment information.
+ */
+type ExtendedNoteType = Exclude<NoteType, "mermaid" | "launcher" | "text" | "code"> | "empty" | "readOnlyCode" | "readOnlyText" | "editableText" | "editableCode" | "attachmentDetail" | "attachmentList" | "protectedSession";
+
 export default class NoteDetailWidget extends NoteContextAwareWidget {
+
+    private typeWidgets: Record<string, TypeWidget>;
+    private spacedUpdate: SpacedUpdate;
+    private type?: ExtendedNoteType;
+    private mime?: string;
+
     constructor() {
         super();
 
         this.typeWidgets = {};
 
         this.spacedUpdate = new SpacedUpdate(async () => {
+            if (!this.noteContext) {
+                return;
+            }
+
             const { note } = this.noteContext;
+            if (!note) {
+                return;
+            }
+
             const { noteId } = note;
 
             const data = await this.getTypeWidget().getData();
@@ -94,7 +116,7 @@ export default class NoteDetailWidget extends NoteContextAwareWidget {
 
             await server.put(`notes/${noteId}/data`, data, this.componentId);
 
-            this.getTypeWidget().dataSaved?.();
+            this.getTypeWidget().dataSaved();
         });
 
         appContext.addBeforeUnloadListener(this);
@@ -129,13 +151,17 @@ export default class NoteDetailWidget extends NoteContextAwareWidget {
 
             this.$widget.append($renderedWidget);
 
+            if (this.noteContext) {
                 await typeWidget.handleEvent("setNoteContext", { noteContext: this.noteContext });
+            }
 
             // this is happening in update(), so note has been already set, and we need to reflect this
+            if (this.noteContext) {
                 await typeWidget.handleEvent("noteSwitched", {
                     noteContext: this.noteContext,
                     notePath: this.noteContext.notePath
                 });
+            }
 
             this.child(typeWidget);
         }
@@ -150,57 +176,60 @@ export default class NoteDetailWidget extends NoteContextAwareWidget {
         // https://github.com/zadam/trilium/issues/2522
         const isBackendNote = this.noteContext?.noteId === "_backendLog";
         const isSqlNote = this.mime === "text/x-sqlite;schema=trilium";
-        const isFullHeightNoteType = ["canvas", "webView", "noteMap", "mindMap", "geoMap"].includes(this.type);
+        const isFullHeightNoteType = ["canvas", "webView", "noteMap", "mindMap", "geoMap"].includes(this.type ?? "");
-        const isFullHeight = (!this.noteContext.hasNoteList() && isFullHeightNoteType && !isSqlNote)
+        const isFullHeight = (!this.noteContext?.hasNoteList() && isFullHeightNoteType && !isSqlNote)
-            || this.noteContext.viewScope.viewMode === "attachments"
+            || this.noteContext?.viewScope?.viewMode === "attachments"
             || isBackendNote;
 
         this.$widget.toggleClass("full-height", isFullHeight);
     }
 
     getTypeWidget() {
-        if (!this.typeWidgets[this.type]) {
+        if (!this.type || !this.typeWidgets[this.type]) {
             throw new Error(t(`note_detail.could_not_find_typewidget`, { type: this.type }));
         }
 
         return this.typeWidgets[this.type];
     }
 
-    async getWidgetType() {
+    async getWidgetType(): Promise<ExtendedNoteType> {
         const note = this.note;
 
         if (!note) {
             return "empty";
         }
 
-        let type = note.type;
+        let type: NoteType = note.type;
-        const viewScope = this.noteContext.viewScope;
+        let resultingType: ExtendedNoteType;
+        const viewScope = this.noteContext?.viewScope;
 
-        if (viewScope.viewMode === "source") {
+        if (viewScope?.viewMode === "source") {
-            type = "readOnlyCode";
+            resultingType = "readOnlyCode";
-        } else if (viewScope.viewMode === "attachments") {
+        } else if (viewScope && viewScope.viewMode === "attachments") {
-            type = viewScope.attachmentId ? "attachmentDetail" : "attachmentList";
+            resultingType = viewScope.attachmentId ? "attachmentDetail" : "attachmentList";
-        } else if (type === "text" && (await this.noteContext.isReadOnly())) {
+        } else if (type === "text" && (await this.noteContext?.isReadOnly())) {
-            type = "readOnlyText";
+            resultingType = "readOnlyText";
-        } else if ((type === "code" || type === "mermaid") && (await this.noteContext.isReadOnly())) {
+        } else if ((type === "code" || type === "mermaid") && (await this.noteContext?.isReadOnly())) {
-            type = "readOnlyCode";
+            resultingType = "readOnlyCode";
         } else if (type === "text") {
-            type = "editableText";
+            resultingType = "editableText";
         } else if (type === "code" || type === "mermaid") {
-            type = "editableCode";
+            resultingType = "editableCode";
         } else if (type === "launcher") {
-            type = "doc";
+            resultingType = "doc";
+        } else {
+            resultingType = type;
         }
 
         if (note.isProtected && !protectedSessionHolder.isProtectedSessionAvailable()) {
-            type = "protectedSession";
+            resultingType = "protectedSession";
         }
 
-        return type;
+        return resultingType;
     }
 
-    async focusOnDetailEvent({ ntxId }) {
+    async focusOnDetailEvent({ ntxId }: EventData<"focusOnDetail">) {
-        if (this.noteContext.ntxId !== ntxId) {
+        if (this.noteContext?.ntxId !== ntxId) {
             return;
         }
 
@@ -210,8 +239,8 @@ export default class NoteDetailWidget extends NoteContextAwareWidget {
         widget.focus();
     }
 
-    async scrollToEndEvent({ ntxId }) {
+    async scrollToEndEvent({ ntxId }: EventData<"scrollToEnd">) {
-        if (this.noteContext.ntxId !== ntxId) {
+        if (this.noteContext?.ntxId !== ntxId) {
             return;
         }
 
@@ -224,29 +253,29 @@ export default class NoteDetailWidget extends NoteContextAwareWidget {
         }
     }
 
-    async beforeNoteSwitchEvent({ noteContext }) {
+    async beforeNoteSwitchEvent({ noteContext }: EventData<"beforeNoteSwitch">) {
         if (this.isNoteContext(noteContext.ntxId)) {
             await this.spacedUpdate.updateNowIfNecessary();
         }
     }
 
-    async beforeNoteContextRemoveEvent({ ntxIds }) {
+    async beforeNoteContextRemoveEvent({ ntxIds }: EventData<"beforeNoteContextRemove">) {
         if (this.isNoteContext(ntxIds)) {
             await this.spacedUpdate.updateNowIfNecessary();
         }
     }
 
-    async runActiveNoteCommand(params) {
+    async runActiveNoteCommand(params: CommandListenerData<"runActiveNote">) {
         if (this.isNoteContext(params.ntxId)) {
             // make sure that script is saved before running it #4028
             await this.spacedUpdate.updateNowIfNecessary();
         }
 
-        return await this.parent.triggerCommand("runActiveNote", params);
+        return await this.parent?.triggerCommand("runActiveNote", params);
     }
 
     async printActiveNoteEvent() {
-        if (!this.noteContext.isActive()) {
+        if (!this.noteContext?.isActive()) {
             return;
         }
 
@@ -254,7 +283,7 @@ export default class NoteDetailWidget extends NoteContextAwareWidget {
     }
 
     async exportAsPdfEvent() {
-        if (!this.noteContext.isActive()) {
+        if (!this.noteContext?.isActive() || !this.note) {
             return;
         }
 
@@ -266,18 +295,18 @@ export default class NoteDetailWidget extends NoteContextAwareWidget {
         });
     }
 
-    hoistedNoteChangedEvent({ ntxId }) {
+    hoistedNoteChangedEvent({ ntxId }: EventData<"hoistedNoteChanged">) {
         if (this.isNoteContext(ntxId)) {
             this.refresh();
         }
     }
 
-    async entitiesReloadedEvent({ loadResults }) {
+    async entitiesReloadedEvent({ loadResults }: EventData<"entitiesReloaded">) {
         // we're detecting note type change on the note_detail level, but triggering the noteTypeMimeChanged
         // globally, so it gets also to e.g. ribbon components. But this means that the event can be generated multiple
         // times if the same note is open in several tabs.
 
-        if (loadResults.isNoteContentReloaded(this.noteId, this.componentId)) {
+        if (this.noteId && loadResults.isNoteContentReloaded(this.noteId, this.componentId)) {
             // probably incorrect event
             // calling this.refresh() is not enough since the event needs to be propagated to children as well
             // FIXME: create a separate event to force hierarchical refresh
@@ -285,7 +314,7 @@ export default class NoteDetailWidget extends NoteContextAwareWidget {
             // this uses handleEvent to make sure that the ordinary content updates are propagated only in the subtree
             // to avoid the problem in #3365
             this.handleEvent("noteTypeMimeChanged", { noteId: this.noteId });
-        } else if (loadResults.isNoteReloaded(this.noteId, this.componentId) && (this.type !== (await this.getWidgetType()) || this.mime !== this.note.mime)) {
+        } else if (this.noteId && loadResults.isNoteReloaded(this.noteId, this.componentId) && (this.type !== (await this.getWidgetType()) || this.mime !== this.note?.mime)) {
             // this needs to have a triggerEvent so that e.g., note type (not in the component subtree) is updated
             this.triggerEvent("noteTypeMimeChanged", { noteId: this.noteId });
         } else {
@@ -293,12 +322,12 @@ export default class NoteDetailWidget extends NoteContextAwareWidget {
 
             const label = attrs.find(
                 (attr) =>
-                    attr.type === "label" && ["readOnly", "autoReadOnlyDisabled", "cssClass", "displayRelations", "hideRelations"].includes(attr.name) && attributeService.isAffecting(attr, this.note)
+                    attr.type === "label" && ["readOnly", "autoReadOnlyDisabled", "cssClass", "displayRelations", "hideRelations"].includes(attr.name ?? "") && attributeService.isAffecting(attr, this.note)
             );
 
-            const relation = attrs.find((attr) => attr.type === "relation" && ["template", "inherit", "renderNote"].includes(attr.name) && attributeService.isAffecting(attr, this.note));
+            const relation = attrs.find((attr) => attr.type === "relation" && ["template", "inherit", "renderNote"].includes(attr.name ?? "") && attributeService.isAffecting(attr, this.note));
 
-            if (label || relation) {
+            if (this.noteId && (label || relation)) {
                 // probably incorrect event
                 // calling this.refresh() is not enough since the event needs to be propagated to children as well
                 this.triggerEvent("noteTypeMimeChanged", { noteId: this.noteId });
@@ -310,13 +339,13 @@ export default class NoteDetailWidget extends NoteContextAwareWidget {
         return this.spacedUpdate.isAllSavedAndTriggerUpdate();
     }
 
-    readOnlyTemporarilyDisabledEvent({ noteContext }) {
+    readOnlyTemporarilyDisabledEvent({ noteContext }: EventData<"readOnlyTemporarilyDisabled">) {
         if (this.isNoteContext(noteContext.ntxId)) {
             this.refresh();
         }
     }
 
-    async executeInActiveNoteDetailWidgetEvent({ callback }) {
+    async executeInActiveNoteDetailWidgetEvent({ callback }: EventData<"executeInActiveNoteDetailWidget">) {
         if (!this.isActiveNoteContext()) {
             return;
         }
@@ -334,12 +363,15 @@ export default class NoteDetailWidget extends NoteContextAwareWidget {
         }
 
         // without await as this otherwise causes deadlock through component mutex
-        noteCreateService.createNote(appContext.tabManager.getActiveContextNotePath(), {
+        const parentNotePath = appContext.tabManager.getActiveContextNotePath();
+        if (this.noteContext && parentNotePath) {
+            noteCreateService.createNote(parentNotePath, {
                 isProtected: note.isProtected,
                 saveSelection: true,
                 textEditor: await this.noteContext.getTextEditor()
             });
         }
+    }
 
     // used by cutToNote in CKEditor build
     async saveNoteDetailNowCommand() {
@@ -347,12 +379,12 @@ export default class NoteDetailWidget extends NoteContextAwareWidget {
     }
 
     renderActiveNoteEvent() {
-        if (this.noteContext.isActive()) {
+        if (this.noteContext?.isActive()) {
             this.refresh();
         }
     }
 
-    async executeWithTypeWidgetEvent({ resolve, ntxId }) {
+    async executeWithTypeWidgetEvent({ resolve, ntxId }: EventData<"executeWithTypeWidget">) {
         if (!this.isNoteContext(ntxId)) {
             return;
         }

src/public/app/widgets/note_tree.js

@@ -368,7 +368,11 @@ export default class NoteTreeWidget extends NoteContextAwareWidget {
                 const notePath = treeService.getNotePath(data.node);
 
                 const activeNoteContext = appContext.tabManager.getActiveContext();
-                await activeNoteContext.setNote(notePath);
+                const opts = {};
+                if (activeNoteContext.viewScope.viewMode === "contextual-help") {
+                    opts.viewScope = activeNoteContext.viewScope;
+                }
+                await activeNoteContext.setNote(notePath, opts);
             },
             expand: (event, data) => this.setExpanded(data.node.data.branchId, true),
             collapse: (event, data) => this.setExpanded(data.node.data.branchId, false),
@@ -550,7 +554,12 @@ export default class NoteTreeWidget extends NoteContextAwareWidget {
                     $span.append($refreshSearchButton);
                 }
 
-                if (!["search", "launcher"].includes(note.type) && !note.isOptions() && !note.isLaunchBarConfig()) {
+                // TODO: Deduplicate with server's notes.ts#getAndValidateParent
+                if (!["search", "launcher"].includes(note.type)
+                        && !note.isOptions()
+                        && !note.isLaunchBarConfig()
+                        && !note.noteId.startsWith("_help")
+                    ) {
                     const $createChildNoteButton = $(`<span class="tree-item-button add-note-button bx bx-plus" title="${t("note_tree.create-child-note")}"></span>`).on(
                         "click",
                         cancelClickPropagation

src/public/app/widgets/toc.ts

@@ -18,8 +18,9 @@ import attributeService from "../services/attributes.js";
 import RightPanelWidget from "./right_panel_widget.js";
 import options from "../services/options.js";
 import OnClickButtonWidget from "./buttons/onclick_button.js";
-import appContext from "../components/app_context.js";
+import appContext, { type EventData } from "../components/app_context.js";
 import libraryLoader from "../services/library_loader.js";
+import type FNote from "../entities/fnote.js";
 
 const TPL = `<div class="toc-widget">
     <style>
@@ -53,7 +54,16 @@ const TPL = `<div class="toc-widget">
     <span class="toc"></span>
 </div>`;
 
+interface Toc {
+    $toc: JQuery<HTMLElement>,
+    headingCount: number
+}
+
 export default class TocWidget extends RightPanelWidget {
+
+    private $toc!: JQuery<HTMLElement>;
+    private tocLabelValue?: string | null;
+
     get widgetTitle() {
         return t("toc.table_of_contents");
     }
@@ -75,7 +85,17 @@ export default class TocWidget extends RightPanelWidget {
     }
 
     isEnabled() {
-        return super.isEnabled() && this.note.type === "text" && !this.noteContext.viewScope.tocTemporarilyHidden && this.noteContext.viewScope.viewMode === "default";
+        if (!super.isEnabled() || !this.note) {
+            return false;
+        }
+
+        const isHelpNote = (this.note.type === "doc" && this.note.noteId.startsWith("_help"));
+        const isTextNote = (this.note.type === "text");
+        const isNoteSupported = isTextNote || isHelpNote;
+
+        return isNoteSupported
+            && !this.noteContext?.viewScope?.tocTemporarilyHidden
+            && this.noteContext?.viewScope?.viewMode === "default";
     }
 
     async doRenderBody() {
@@ -83,36 +103,63 @@ export default class TocWidget extends RightPanelWidget {
         this.$toc = this.$body.find(".toc");
     }
 
-    async refreshWithNote(note) {
+    async refreshWithNote(note: FNote) {
-        /*The reason for adding tocPreviousVisible is to record whether the previous state of the toc is hidden or displayed,
-         * and then let it be displayed/hidden at the initial time. If there is no such value,
-         * when the right panel needs to display highlighttext but not toc, every time the note content is changed,
-         * toc will appear and then close immediately, because getToc(html) function will consume time*/
-        this.toggleInt(!!this.noteContext.viewScope.tocPreviousVisible);
 
-        const tocLabel = note.getLabel("toc");
+        this.toggleInt(!!this.noteContext?.viewScope?.tocPreviousVisible);
 
-        if (tocLabel?.value === "hide") {
+        this.tocLabelValue = note.getLabelValue("toc");
+
+        if (this.tocLabelValue === "hide") {
             this.toggleInt(false);
             this.triggerCommand("reEvaluateRightPaneVisibility");
             return;
         }
 
-        let $toc = "",
+        if (!this.note || !this.noteContext?.viewScope) {
-            headingCount = 0;
+            return;
-        // Check for type text unconditionally in case alwaysShowWidget is set
-        if (this.note.type === "text") {
-            const { content } = await note.getBlob();
-            ({ $toc, headingCount } = await this.getToc(content));
         }
 
-        this.$toc.html($toc);
+        // Check for type text unconditionally in case alwaysShowWidget is set
-        if (["", "show"].includes(tocLabel?.value) || headingCount >= options.getInt("minTocHeadings")) {
+        if (this.note.type === "text") {
-            this.toggleInt(true);
+            const blob = await note.getBlob();
-            this.noteContext.viewScope.tocPreviousVisible = true;
+            if (blob) {
+                const toc = await this.getToc(blob.content);
+                this.#updateToc(toc);
+            }
+            return;
+        }
+
+        if (this.note.type === "doc") {
+            /**
+             * For document note types, we obtain the content directly from the DOM since it allows us to obtain processed data without
+             * requesting data twice. However, when immediately navigating to a new note the new document is not yet attached to the hierarchy,
+             * resulting in an empty TOC. The fix is to simply wait for it to pop up.
+             */
+            setTimeout(async () => {
+                const $contentEl = await this.noteContext?.getContentElement();
+                if ($contentEl) {
+                    const content = $contentEl.html();
+                    const toc = await this.getToc(content);
+                    this.#updateToc(toc);
                 } else {
-            this.toggleInt(false);
+                    console.warn("Unable to get content element for doctype");
-            this.noteContext.viewScope.tocPreviousVisible = false;
+                }
+            }, 10);
+        }
+    }
+
+    #updateToc({ $toc, headingCount }: Toc) {
+        this.$toc.empty();
+        if ($toc) {
+            this.$toc.append($toc);
+        }
+
+        const tocLabelValue = this.tocLabelValue;
+
+        const visible = (tocLabelValue === "" || tocLabelValue === "show") || headingCount >= (options.getInt("minTocHeadings") ?? 0);
+        this.toggleInt(visible);
+        if (this.noteContext?.viewScope) {
+            this.noteContext.viewScope.tocPreviousVisible = visible;
         }
 
         this.triggerCommand("reEvaluateRightPaneVisibility");
@@ -121,10 +168,10 @@ export default class TocWidget extends RightPanelWidget {
     /**
      * Rendering formulas in strings using katex
      *
-     * @param {string} html Note's html content
+     * @param html Note's html content
-     * @returns {string} The HTML content with mathematical formulas rendered by KaTeX.
+     * @returns The HTML content with mathematical formulas rendered by KaTeX.
      */
-    async replaceMathTextWithKatax(html) {
+    async replaceMathTextWithKatax(html: string) {
         const mathTextRegex = /<span class="math-tex">\\\(([\s\S]*?)\\\)<\/span>/g;
         var matches = [...html.matchAll(mathTextRegex)];
         let modifiedText = html;
@@ -167,12 +214,12 @@ export default class TocWidget extends RightPanelWidget {
     /**
      * Builds a jquery table of contents.
      *
-     * @param {string} html Note's html content
+     * @param html Note's html content
-     * @returns {$toc: jQuery, headingCount: integer} ordered list table of headings, nested by heading level
+     * @returns ordered list table of headings, nested by heading level
      *         with an onclick event that will cause the document to scroll to
      *         the desired position.
      */
-    async getToc(html) {
+    async getToc(html: string): Promise<Toc> {
         // Regular expression for headings <h1>...</h1> using non-greedy
         // matching and backreferences
         const headingTagsRegex = /<h(\d+)[^>]*>(.*?)<\/h\1>/gi;
@@ -184,12 +231,12 @@ export default class TocWidget extends RightPanelWidget {
         // Note heading 2 is the first level Trilium makes available to the note
         let curLevel = 2;
         const $ols = [$toc];
-        let headingCount;
+        let headingCount = 0;
         for (let m = null, headingIndex = 0; (m = headingTagsRegex.exec(html)) !== null; headingIndex++) {
             //
             // Nest/unnest whatever necessary number of ordered lists
             //
-            const newLevel = m[1];
+            const newLevel = parseInt(m[1]);
             const levelDelta = newLevel - curLevel;
             if (levelDelta > 0) {
                 // Open as many lists as newLevel - curLevel
@@ -229,7 +276,7 @@ export default class TocWidget extends RightPanelWidget {
     /**
      * Reduce indent if a larger headings are not being used: https://github.com/zadam/trilium/issues/4363
      */
-    pullLeft($toc) {
+    pullLeft($toc: JQuery<HTMLElement>) {
         while (true) {
             const $children = $toc.children();
 
@@ -248,16 +295,21 @@ export default class TocWidget extends RightPanelWidget {
         return $toc;
     }
 
-    async jumpToHeading(headingIndex) {
+    async jumpToHeading(headingIndex: number) {
+        if (!this.note || !this.noteContext) {
+            return;
+        }
+
         // A readonly note can change state to "readonly disabled
         // temporarily" (ie "edit this note" button) without any
         // intervening events, do the readonly calculation at navigation
         // time and not at outline creation time
         // See https://github.com/zadam/trilium/issues/2828
+        const isDocNote = this.note.type === "doc";
         const isReadOnly = await this.noteContext.isReadOnly();
 
         let $container;
-        if (isReadOnly) {
+        if (isReadOnly || isDocNote) {
             $container = await this.noteContext.getContentElement();
         } else {
             const textEditor = await this.noteContext.getTextEditor();
@@ -269,26 +321,28 @@ export default class TocWidget extends RightPanelWidget {
     }
 
     async closeTocCommand() {
+        if (this.noteContext?.viewScope) {
             this.noteContext.viewScope.tocTemporarilyHidden = true;
+        }
         await this.refresh();
         this.triggerCommand("reEvaluateRightPaneVisibility");
         appContext.triggerEvent("reEvaluateTocWidgetVisibility", { noteId: this.noteId });
     }
 
-    async showTocWidgetEvent({ noteId }) {
+    async showTocWidgetEvent({ noteId }: EventData<"showToc">) {
         if (this.noteId === noteId) {
             await this.refresh();
             this.triggerCommand("reEvaluateRightPaneVisibility");
         }
     }
 
-    async entitiesReloadedEvent({ loadResults }) {
+    async entitiesReloadedEvent({ loadResults }: EventData<"entitiesReloaded">) {
-        if (loadResults.isNoteContentReloaded(this.noteId)) {
+        if (this.noteId && loadResults.isNoteContentReloaded(this.noteId)) {
             await this.refresh();
         } else if (
             loadResults
                 .getAttributeRows()
-                .find((attr) => attr.type === "label" && (attr.name.toLowerCase().includes("readonly") || attr.name === "toc") && attributeService.isAffecting(attr, this.note))
+                .find((attr) => attr.type === "label" && ((attr.name ?? "").toLowerCase().includes("readonly") || attr.name === "toc") && attributeService.isAffecting(attr, this.note))
         ) {
             await this.refresh();
         }

src/public/app/widgets/type_widgets/content_widget.ts

@@ -35,6 +35,8 @@ import RibbonOptions from "./options/appearance/ribbon.js";
 import LocalizationOptions from "./options/appearance/i18n.js";
 import CodeBlockOptions from "./options/appearance/code_block.js";
 import EditorOptions from "./options/text_notes/editor.js";
+import type FNote from "../../entities/fnote.js";
+import type NoteContextAwareWidget from "../note_context_aware_widget.js";
 
 const TPL = `<div class="note-detail-content-widget note-detail-printable">
     <style>
@@ -55,7 +57,7 @@ const TPL = `<div class="note-detail-content-widget note-detail-printable">
     <div class="note-detail-content-widget-content"></div>
 </div>`;
 
-const CONTENT_WIDGETS = {
+const CONTENT_WIDGETS: Record<string, (typeof NoteContextAwareWidget)[]> = {
     _optionsAppearance: [LocalizationOptions, ThemeOptions, FontsOptions, CodeBlockOptions, ElectronIntegrationOptions, MaxContentWidthOptions, RibbonOptions],
     _optionsShortcuts: [KeyboardShortcutsOptions],
     _optionsTextNotes: [EditorOptions, HeadingStyleOptions, TableOfContentsOptions, HighlightsListOptions, TextAutoReadOnlySizeOptions],
@@ -81,6 +83,9 @@ const CONTENT_WIDGETS = {
 };
 
 export default class ContentWidgetTypeWidget extends TypeWidget {
+
+    private $content!: JQuery<HTMLElement>;
+
     static getType() {
         return "contentWidget";
     }
@@ -92,7 +97,7 @@ export default class ContentWidgetTypeWidget extends TypeWidget {
         super.doRender();
     }
 
-    async doRefresh(note) {
+    async doRefresh(note: FNote) {
         this.$content.empty();
         this.children = [];
 
@@ -103,7 +108,9 @@ export default class ContentWidgetTypeWidget extends TypeWidget {
             for (const clazz of contentWidgets) {
                 const widget = new clazz();
 
+                if (this.noteContext) {
                     await widget.handleEvent("setNoteContext", { noteContext: this.noteContext });
+                }
                 this.child(widget);
 
                 this.$content.append(widget.render());

src/public/app/widgets/type_widgets/doc.ts

@@ -1,4 +1,6 @@
+import type { EventData } from "../../components/app_context.js";
 import type FNote from "../../entities/fnote.js";
+import { applySyntaxHighlight } from "../../services/syntax_highlight.js";
 import TypeWidget from "./type_widget.js";
 
 const TPL = `<div class="note-detail-doc note-detail-printable">
@@ -13,6 +15,24 @@ const TPL = `<div class="note-detail-doc note-detail-printable">
             padding: 15px;
             border-radius: 5px;
         }
+
+        .note-detail-doc.contextual-help {
+            padding-bottom: 15vh;
+        }
+
+        .note-detail-doc.contextual-help h2,
+        .note-detail-doc.contextual-help h3,
+        .note-detail-doc.contextual-help h4,
+        .note-detail-doc.contextual-help h5,
+        .note-detail-doc.contextual-help h6 {
+            font-size: 1.25rem;
+            background-color: var(--main-background-color);
+            position: sticky;
+            top: 0;
+            z-index: 50;
+            margin: 0;
+            padding-bottom: 0.25em;
+        }
     </style>
 
     <div class="note-detail-doc-content"></div>
@@ -34,19 +54,71 @@ export default class DocTypeWidget extends TypeWidget {
     }
 
     async doRefresh(note: FNote) {
-        const docName = note.getLabelValue("docName");
+        this.initialized = this.#loadContent(note);
+        this.$widget.toggleClass("contextual-help", this.noteContext?.viewScope?.viewMode === "contextual-help");
+    }
+
+    #loadContent(note: FNote) {
+        return new Promise<void>((resolve) => {
+            let docName = note.getLabelValue("docName");
 
             if (docName) {
                 // find doc based on language
-            const lng = i18next.language;
+                const url = this.#getUrl(docName, i18next.language);
-            this.$content.load(`${window.glob.appPath}/doc_notes/${lng}/${docName}.html`, (response, status) => {
+                this.$content.load(url, (response, status) => {
                     // fallback to english doc if no translation available
                     if (status === "error") {
-                    this.$content.load(`${window.glob.appPath}/doc_notes/en/${docName}.html`);
+                        const fallbackUrl = this.#getUrl(docName, "en");
+                        this.$content.load(fallbackUrl, () => this.#processContent(fallbackUrl));
+                        resolve();
+                        return;
                     }
+
+                    this.#processContent(url);
+                    resolve();
                 });
             } else {
                 this.$content.empty();
             }
+        });
     }
+
+    #getUrl(docNameValue: string, language: string) {
+        // For help notes, we only get the content to avoid loading of styles and meta.
+        let suffix = "";
+        if (docNameValue?.startsWith("User Guide")) {
+            suffix = " .content";
+        }
+
+        // Cannot have spaces in the URL due to how JQuery.load works.
+        docNameValue = docNameValue.replaceAll(" ", "%20");
+
+        return `${window.glob.appPath}/doc_notes/${language}/${docNameValue}.html${suffix}`;
+    }
+
+    #processContent(url: string) {
+        const dir = url.substring(0, url.lastIndexOf("/"));
+
+        // Remove top-level heading since it's already handled by the note title
+        this.$content.find("h1").remove();
+
+        // Images are relative to the docnote but that will not work when rendered in the application since the path breaks.
+        this.$content.find("img").each((i, el) => {
+            const $img = $(el);
+            $img.attr("src", dir + "/" + $img.attr("src"));
+        });
+
+        applySyntaxHighlight(this.$content);
+    }
+
+    async executeWithContentElementEvent({ resolve, ntxId }: EventData<"executeWithContentElement">) {
+        if (!this.isNoteContext(ntxId)) {
+            return;
+        }
+
+        await this.initialized;
+
+        resolve(this.$content);
+    }
+
 }

src/public/app/widgets/type_widgets/type_widget.ts

@@ -6,7 +6,7 @@ import type SpacedUpdate from "../../services/spaced_update.js";
 
 export default abstract class TypeWidget extends NoteContextAwareWidget {
 
-    protected spacedUpdate!: SpacedUpdate;
+    spacedUpdate!: SpacedUpdate;
 
     // for overriding
     static getType() {}
@@ -45,6 +45,14 @@ export default abstract class TypeWidget extends NoteContextAwareWidget {
 
     focus() {}
 
+    scrollToEnd() {
+        // Do nothing by default.
+    }
+
+    dataSaved() {
+        // Do nothing by default.
+    }
+
     async readOnlyTemporarilyDisabledEvent({ noteContext }: EventData<"readOnlyTemporarilyDisabled">) {
         if (this.isNoteContext(noteContext.ntxId)) {
             await this.refresh();

src/public/stylesheets/style.css

@@ -1606,3 +1606,9 @@ body.electron.platform-darwin:not(.native-titlebar) .tab-row-container {
     background: var(--hover-item-background-color);
     color: var(--hover-item-text-color);
 }
+
+.note-split.type-geoMap .floating-buttons-children {
+    background: var(--main-background-color);
+    box-shadow: 0px 10px 20px rgba(0, 0, 0, var(--dropdown-shadow-opacity));
+    border-radius: 4px;
+}

src/public/translations/en/translation.json

@@ -641,7 +641,8 @@
     "show_hidden_subtree": "Show Hidden Subtree",
     "show_help": "Show Help",
     "about": "About TriliumNext Notes",
-    "logout": "Logout"
+    "logout": "Logout",
+    "show-cheatsheet": "Show Cheatsheet"
   },
   "sync_status": {
     "unknown": "<p>Sync status will be known once the next sync attempt starts.</p><p>Click to trigger sync now.</p>",
@@ -1644,5 +1645,8 @@
   "geo-map-context": {
     "open-location": "Open location",
     "remove-from-map": "Remove from map"
+  },
+  "help-button": {
+    "title": "Open the relevant help page"
   }
 }

src/services/export/zip.ts

@@ -21,6 +21,7 @@ import type AttributeMeta from "../meta/attribute_meta.js";
 import type BBranch from "../../becca/entities/bbranch.js";
 import type { Response } from "express";
 import { RESOURCE_DIR } from "../resource_dir.js";
+import type { NoteMetaFile } from "../meta/note_meta.js";
 
 async function exportToZip(taskContext: TaskContext, branch: BBranch, format: "html" | "markdown", res: Response | fs.WriteStream, setHeaders = true) {
     if (!["html", "markdown"].includes(format)) {
@@ -485,8 +486,11 @@ ${markdownContent}`;
 
     const existingFileNames: Record<string, number> = format === "html" ? { navigation: 0, index: 1 } : {};
     const rootMeta = createNoteMeta(branch, { notePath: [] }, existingFileNames);
+    if (!rootMeta) {
+        throw new Error("Unable to create root meta.");
+    }
 
-    const metaFile = {
+    const metaFile: NoteMetaFile = {
         formatVersion: 2,
         appVersion: packageInfo.version,
         files: [rootMeta]

src/services/hidden_subtree.ts

@@ -6,6 +6,8 @@ import noteService from "./notes.js";
 import log from "./log.js";
 import migrationService from "./migration.js";
 import { t } from "i18next";
+import app_path from "./app_path.js";
+import { getHelpHiddenSubtreeData } from "./in_app_help.js";
 
 const LBTPL_ROOT = "_lbTplRoot";
 const LBTPL_BASE = "_lbTplBase";
@@ -16,21 +18,21 @@ const LBTPL_BUILTIN_WIDGET = "_lbTplBuiltinWidget";
 const LBTPL_SPACER = "_lbTplSpacer";
 const LBTPL_CUSTOM_WIDGET = "_lbTplCustomWidget";
 
-interface Attribute {
+interface HiddenSubtreeAttribute {
     type: AttributeType;
     name: string;
     isInheritable?: boolean;
     value?: string;
 }
 
-interface Item {
+export interface HiddenSubtreeItem {
     notePosition?: number;
     id: string;
     title: string;
     type: NoteType;
     icon?: string;
-    attributes?: Attribute[];
+    attributes?: HiddenSubtreeAttribute[];
-    children?: Item[];
+    children?: HiddenSubtreeItem[];
     isExpanded?: boolean;
     baseSize?: string;
     growthFactor?: string;
@@ -54,9 +56,9 @@ enum Command {
  * duplicate subtrees. This way, all instances will generate the same structure with the same IDs.
  */
 
-let hiddenSubtreeDefinition: Item;
+let hiddenSubtreeDefinition: HiddenSubtreeItem;
 
-function buildHiddenSubtreeDefinition(): Item {
+function buildHiddenSubtreeDefinition(): HiddenSubtreeItem {
     return {
         id: "_hidden",
         title: t("hidden-subtree.root-title"),
@@ -345,6 +347,14 @@ function buildHiddenSubtreeDefinition(): Item {
                     { id: "_optionsOther", title: t("hidden-subtree.other"), type: "contentWidget", icon: "bx-dots-horizontal" },
                     { id: "_optionsAdvanced", title: t("hidden-subtree.advanced-title"), type: "contentWidget" }
                 ]
+            },
+            {
+                id: "_help",
+                title: t("hidden-subtree.user-guide"),
+                type: "book",
+                icon: "bx-help-circle",
+                children: getHelpHiddenSubtreeData(),
+                isExpanded: true
             }
         ]
     };
@@ -368,7 +378,7 @@ function checkHiddenSubtree(force = false, extraOpts: CheckHiddenExtraOpts = {})
     checkHiddenSubtreeRecursively("root", hiddenSubtreeDefinition, extraOpts);
 }
 
-function checkHiddenSubtreeRecursively(parentNoteId: string, item: Item, extraOpts: CheckHiddenExtraOpts = {}) {
+function checkHiddenSubtreeRecursively(parentNoteId: string, item: HiddenSubtreeItem, extraOpts: CheckHiddenExtraOpts = {}) {
     if (!item.id || !item.type || !item.title) {
         throw new Error(`Item does not contain mandatory properties: ${JSON.stringify(item)}`);
     }
@@ -449,7 +459,9 @@ function checkHiddenSubtreeRecursively(parentNoteId: string, item: Item, extraOp
     for (const attr of attrs) {
         const attrId = note.noteId + "_" + attr.type.charAt(0) + attr.name;
 
-        if (!note.getAttributes().find((attr) => attr.attributeId === attrId)) {
+        const existingAttribute = note.getAttributes().find((attr) => attr.attributeId === attrId);
+
+        if (!existingAttribute) {
             new BAttribute({
                 attributeId: attrId,
                 noteId: note.noteId,
@@ -458,6 +470,10 @@ function checkHiddenSubtreeRecursively(parentNoteId: string, item: Item, extraOp
                 value: attr.value,
                 isInheritable: false
             }).save();
+        } else if (attr.name === "docName") {
+            // Updating docname
+            existingAttribute.value = attr.value ?? "";
+            existingAttribute.save();
         }
     }
 

src/services/in_app_help.ts

@@ -0,0 +1,87 @@
+import path from "path";
+import fs from "fs";
+import type { HiddenSubtreeItem } from "./hidden_subtree.js";
+import type NoteMeta from "./meta/note_meta.js";
+import type { NoteMetaFile } from "./meta/note_meta.js";
+import { fileURLToPath } from "url";
+import { isDev } from "./utils.js";
+
+export function getHelpHiddenSubtreeData() {
+    const srcRoot = path.join(path.dirname(fileURLToPath(import.meta.url)), "..");
+    const appDir = path.join(srcRoot, "public", isDev ? "app" : "app-dist");
+    const helpDir = path.join(appDir, "doc_notes", "en", "User Guide");
+    const metaFilePath = path.join(helpDir, "!!!meta.json");
+    const metaFileContent = JSON.parse(fs.readFileSync(metaFilePath).toString("utf-8"));
+
+    try {
+        return parseNoteMetaFile(metaFileContent as NoteMetaFile);
+    } catch (e) {
+        console.warn(e);
+        return [];
+    }
+}
+
+function parseNoteMetaFile(noteMetaFile: NoteMetaFile): HiddenSubtreeItem[] {
+    if (!noteMetaFile.files) {
+        return [];
+    }
+
+    const metaRoot = noteMetaFile.files[0];
+    const parsedMetaRoot = parseNoteMeta(metaRoot, "/" + (metaRoot.dirFileName ?? ""));
+    console.log(JSON.stringify(parsedMetaRoot, null, 4));
+    return parsedMetaRoot.children ?? [];
+}
+
+function parseNoteMeta(noteMeta: NoteMeta, docNameRoot: string): HiddenSubtreeItem {
+    let iconClass: string = "bx bx-file";
+    const item: HiddenSubtreeItem = {
+        id: `_help_${noteMeta.noteId}`,
+        title: noteMeta.title ?? "",
+        type: "doc", // can change
+        attributes: []
+    };
+
+    // Handle attributes
+    for (const attribute of noteMeta.attributes ?? []) {
+        if (attribute.name === "iconClass") {
+            iconClass = attribute.value;
+        }
+    }
+
+    // Handle folder notes
+    if (!noteMeta.dataFileName) {
+        iconClass = "bx bx-folder";
+        item.type = "book";
+    }
+
+    // Handle text notes
+    if (noteMeta.type === "text" && noteMeta.dataFileName) {
+        const docPath = `${docNameRoot}/${path.basename(noteMeta.dataFileName, ".html")}`
+            .substring(1);
+        item.attributes?.push({
+            type: "label",
+            name: "docName",
+            value: docPath
+        });
+    }
+
+    // Handle children
+    if (noteMeta.children) {
+        const children: HiddenSubtreeItem[] = [];
+        for (const childMeta of noteMeta.children) {
+            let newDocNameRoot = (noteMeta.dirFileName ? `${docNameRoot}/${noteMeta.dirFileName}` : docNameRoot);
+            children.push(parseNoteMeta(childMeta, newDocNameRoot));
+        }
+
+        item.children = children;
+    }
+
+    // Handle note icon
+    item.attributes?.push({
+        name: "iconClass",
+        value: iconClass,
+        type: "label"
+    });
+
+    return item;
+}

src/services/keyboard_actions.ts

@@ -344,6 +344,12 @@ function getDefaultKeyboardActions() {
             description: t("keyboard_actions.show-help"),
             scope: "window"
         },
+        {
+            actionName: "showCheatsheet",
+            defaultShortcuts: ["Shift+F1"],
+            description: t("keyboard_actions.show-cheatsheet"),
+            scope: "window"
+        },
 
         {
             separator: t("keyboard_actions.text-note-operations")

src/services/keyboard_actions_interface.ts

@@ -51,6 +51,7 @@ const enum KeyboardActionNamesEnum {
     showRecentChanges,
     showSQLConsole,
     showBackendLog,
+    showCheatsheet,
     showHelp,
     addLinkToText,
     followLinkUnderCursor,

src/services/meta/note_meta.ts

@@ -1,6 +1,12 @@
 import type AttachmentMeta from "./attachment_meta.js";
 import type AttributeMeta from "./attribute_meta.js";
 
+export interface NoteMetaFile {
+    formatVersion: number;
+    appVersion: string;
+    files: NoteMeta[];
+}
+
 export default interface NoteMeta {
     noteId?: string;
     notePath?: string[];

src/services/notes.ts

@@ -146,7 +146,10 @@ function getAndValidateParent(params: GetValidateParams) {
     }
 
     if (!params.ignoreForbiddenParents) {
-        if (["_lbRoot", "_hidden"].includes(parentNote.noteId) || parentNote.noteId.startsWith("_lbTpl") || parentNote.isOptions()) {
+        if (["_lbRoot", "_hidden"].includes(parentNote.noteId)
+                || parentNote.noteId.startsWith("_lbTpl")
+                || parentNote.noteId.startsWith("_help")
+                || parentNote.isOptions()) {
             throw new ValidationError(`Creating child notes into '${parentNote.noteId}' is not allowed.`);
         }
     }

translations/en/server.json

@@ -88,10 +88,11 @@
     "reset-zoom-level": "Reset zoom level",
     "copy-without-formatting": "Copy selected text without formatting",
     "force-save-revision": "Force creating / saving new note revision of the active note",
-    "show-help": "Shows built-in Help / cheatsheet",
+    "show-help": "Shows the built-in User Guide",
     "toggle-book-properties": "Toggle Book Properties",
     "toggle-classic-editor-toolbar": "Toggle the Formatting tab for the editor with fixed toolbar",
-    "export-as-pdf": "Exports the current note as a PDF"
+    "export-as-pdf": "Exports the current note as a PDF",
+    "show-cheatsheet": "Shows a modal with common keyboard operations"
   },
   "login": {
     "title": "Login",
@@ -241,7 +242,8 @@
     "sync-title": "Sync",
     "other": "Other",
     "advanced-title": "Advanced",
-    "visible-launchers-title": "Visible Launchers"
+    "visible-launchers-title": "Visible Launchers",
+    "user-guide": "User Guide"
   },
   "notes": {
     "new-note": "New note",