Add documentation for the Web IDE command palette

doc/user/project/repository/web_editor.md

@@ -29,6 +29,11 @@ When you are satisfied with your new file, click **Commit Changes** at the botto
 
 ![Create file editor](img/web_editor_new_file_editor.png)
 
+### Shortcuts
+
+You can use handy shortcuts when editing a file through the Web Editor, which are the same as
+the WEB IDE's. For details, see the documentation for [Command Palette](../web_ide/index.md#command-palette).
+
 ### Template dropdowns
 
 When starting a new project, there are some common files that the new project

doc/user/project/web_ide/index.md

@@ -25,9 +25,25 @@ and from merge requests.
 > [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/18323) in [GitLab Core](https://about.gitlab.com/pricing/) 10.8.
 
 The file finder allows you to quickly open files in the current branch by
-searching. The file finder is launched using the keyboard shortcut `Command-p`,
-`Control-p`, or `t` (when editor is not in focus). Type the filename or
-file path fragments to start seeing results.
+searching for fragments of the file path. The file finder is launched using the keyboard shortcut
+<kbd>Cmd</kbd>+<kbd>p</kbd>, <kbd>Ctrl</kbd>+<kbd>p</kbd>, or <kbd>t</kbd>
+(when editor is not in focus). Type the filename or file path fragments to
+start seeing results.
+
+## Command palette
+
+You can see all available commands for manipulating editor content by pressing
+the <kbd>F1</kbd> key when the editor is in focus. After that,
+you'll see a complete list of available commands for
+manipulating editor content. The editor supports commands for multi-cursor
+editing, code block folding, commenting, searching and replacing, navigating
+editor warnings and suggestions, and more.
+
+Some commands have a keyboard shortcut assigned to them. The command palette
+displays this shortcut next to each command. You can use this shortcut to invoke
+the command without having to select it in the command palette.
+
+![Command palette](img/command_palette_v13_6.png)
 
 ## Syntax highlighting