feat(docs): document split view

docs/User Guide/User Guide/Basic Concepts and Features/UI Elements/Split View.md

@@ -0,0 +1,12 @@
+# Split View
+In Trilium, is possible to work with two or more notes side-by-side.
+
+![](Split%20View_2_Split%20View_im.png)
+
+## **Interactions**
+
+*   Press the ![](Split%20View_Split%20View_imag.png)![](https://file+.vscode-resource.vscode-cdn.net/home/elian/UI%20Elements/Split%20View_image.png) button to the right of a note's title to open a new split to the right of it.
+    *   It is possible to have as many splits as desired, simply press again the button.
+    *   Only horizontal splits are possible, vertical or drag & dropping is not supported.
+*   When at least one split is open, press the ![](https://file+.vscode-resource.vscode-cdn.net/home/elian/UI%20Elements/3_Split%20View_image.png)![](Split%20View_3_Split%20View_im.png) button next to it to close it.
+*   Use the ![](Split%20View_4_Split%20View_im.png)![](https://file+.vscode-resource.vscode-cdn.net/home/elian/UI%20Elements/4_Split%20View_image.png) or the ![](Split%20View_1_Split%20View_im.png)![](https://file+.vscode-resource.vscode-cdn.net/home/elian/UI%20Elements/1_Split%20View_image.png) button to move around the splits.