feat(docs): sidebar, table of contents, highlights list

docs/User Guide/User Guide/Basic Concepts and Features/UI Elements/Right Sidebar.md

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+# Right Sidebar
+<figure class="image"><img style="aspect-ratio:1036/372;" src="Right Sidebar_image.png" width="1036" height="372"></figure>
+
+The right sidebar displays specific content for the current note. Currently it includes:
+
+*   <a class="reference-link" href="../../Note%20Types/Text/Table%20of%20contents.md">Table of contents</a>
+*   <a class="reference-link" href="../../Note%20Types/Text/Highlights%20list.md">Highlights list</a>
+
+Note that the sidebar is not displayed if it would otherwise be empty, for example if there are too few headings and there are no highlights.
+
+## Toggling the right sidebar
+
+The sidebar can be hidden or shown by using the `toggleRightPane` keyboard shortcut, which is not assigned by default.
+
+## Relation with splits
+
+When using <a class="reference-link" href="Split%20View.md">Split View</a>, there is a single sidebar serving all the open splits for the current [tab](Tabs.md).
+
+Clicking on a note within the split view will display the sidebar for that note. If there are no items to display in the sidebar, it will remain closed.

docs/User Guide/User Guide/Note Types/Text/Highlights list.md

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+# Highlights list
+<figure class="image image-style-align-right"><img style="aspect-ratio:250/150;" src="Highlights list_image.png" width="250" height="150"></figure>
+
+Similar to the <a class="reference-link" href="Table%20of%20contents.md">Table of contents</a>, but instead of headings this feature will list highlighted text from a text note and allow easy navigation to them. The list will be displayed in the <a class="reference-link" href="../../Basic%20Concepts%20and%20Features/UI%20Elements/Right%20Sidebar.md">Right Sidebar</a>, provided there is at least one highlighted text.
+
+Highlighted text is defined as:
+
+*   Bold text.
+*   Italic text.
+*   Underlined text.
+*   Text with a foreground color set.
+*   Text with a background color/highlight set.
+
+## Interaction
+
+*   Clicking on a highlighted text will scroll the document to its position.
+*   Pressing the close button will dismiss the list of highlights but it can be shown again from the <a class="reference-link" href="../../Basic%20Concepts%20and%20Features/UI%20Elements/Floating%20buttons.md">Floating buttons</a> section.
+
+## Global configuration
+
+It's possible to toggle the display of each category of highlighted text (as defined above) in the highlights list by going to <a class="reference-link" href="#root/_hidden/_options/_optionsTextNotes">Text Notes</a> settings and looking for the _Highlights List_ section.
+
+## Per-note configuration
+
+To suppress the display of highlighted text for one specific note, use <a class="reference-link" href="../../Advanced%20Usage/Attributes.md">Attributes</a> to add the `#hideHighlightWidget` label.

docs/User Guide/User Guide/Note Types/Text/Table of contents.md

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+# Table of contents
+<figure class="image image-style-align-right"><img style="aspect-ratio:243/171;" src="Table of contents_image.png" width="243" height="171"></figure>
+
+The table of contents appears in the <a class="reference-link" href="../../Basic%20Concepts%20and%20Features/UI%20Elements/Right%20Sidebar.md">Right Sidebar</a> automatically when there are multiple headings in a text note.
+
+## Interaction
+
+*   Clicking on a heading will scroll the document to the position of the heading.
+*   Pressing the close button will dismiss the table of contents but it can be shown again from the <a class="reference-link" href="../../Basic%20Concepts%20and%20Features/UI%20Elements/Floating%20buttons.md">Floating buttons</a> section.
+
+## Global configuration
+
+In <a class="reference-link" href="#root/_hidden/_options/_optionsTextNotes">Text Notes</a> options, look for the _Table of Contents_ section and configure the minimum amount of headings that need to be present in the current note in order for the table of contents to show:
+
+*   To always hide it, set the value to a really large number (e.g. 10000).
+*   To always display it if there's at least a single heading, set the value to 1.
+
+## Per-note configuration
+
+Use <a class="reference-link" href="../../Advanced%20Usage/Attributes.md">Attributes</a> to configure the table of contents for a particular note:
+
+*   `#toc=show` will show the table of contents for that note regardless of the global settings.
+*   Similarly, `#toc=hide` will always hide the table of contents for that note.