Action	PC	Mac
Insert a hard break (a new paragraph)	`Enter`
Insert a soft break (a `<br>` element)	`Shift`+`Enter`	`⇧Enter`
Copy selected content	`Ctrl`+`C`	`⌘C`
Paste content	`Ctrl`+`V`	`⌘V`
Paste content as plain text	`Ctrl`+`Shift`+`V`	`⌘⇧V`
Undo	`Ctrl`+`Z`	`⌘Z`
Redo	`Ctrl`+`Y`, `Ctrl`+`Shift`+`Z`	`⌘Y`, `⌘⇧Z`
Bold text	`Ctrl`+`B`	`⌘B`
Change text case	`Shift`+`F3`	`⇧F3` (may require `Fn`)
Create link	`Ctrl`+`K`	`⌘K`
Move out of a link	`←←`, `→→`
Move out of an inline code style	`←←`, `→→`
Select all	`Ctrl`+`A`	`⌘A`
Find in the document	`Ctrl`+`F`	`⌘F`
Copy text formatting	`Ctrl`+`Shift`+`C`	`⌘⇧C`
Paste text formatting	`Ctrl`+`Shift`+`V`	`⌘⇧V`
Italic text	`Ctrl`+`I`	`⌘I`
Strikethrough text	`Ctrl`+`Shift`+`X`	`⌘⇧X`
Underline text	`Ctrl`+`U`	`⌘U`
Revert autoformatting action	`Backspace`

Blocks are images, tables, blockquotes, annotations.

Action	PC	Mac
Insert a new paragraph directly after a widget	`Enter`
Insert a new paragraph directly before a widget	`Shift`+`Enter`	`⇧Enter`
Move the caret to allow typing directly before a widget	`↑`, `←`
Move the caret to allow typing directly after a widget	`↓`, `→`
After entering a nested editable, move the selection to the closest ancestor widget. For example: move from an image caption to the whole image widget.	`Tab` then `Esc`

Specifically for lists:

Action	PC	Mac
Increase list item indent	`⇥`
Decrease list item indent	`Shift`+`⇥`	`⇧⇥`

In tables:

Action	PC	Mac
Move the selection to the next cell	`⇥`
Move the selection to the previous cell	`Shift`+`⇥`	`⇧⇥`
Insert a new table row (when in the last cell of a table)	`⇥`
Navigate through the table	`↑`, `→`, `↓`, `←`

Action	PC	Mac
Close contextual balloons, dropdowns, and dialogs	`Esc`
Open the accessibility help dialog	`Alt`+`0`	`⌥0`
Move focus between form fields (inputs, buttons, etc.)	`⇥`, `Shift`+`⇥`	`⇥`, `⇧⇥`
Move focus to the toolbar, navigate between toolbars	`Alt`+`F10`	`⌥F10` (may require `Fn`)
Navigate through the toolbar or menu bar	`↑`, `→`, `↓`, `←`
Navigate to the next focusable field or an element outside the editor	`Tab`, `Shift`+`Tab`
Execute the currently focused button. Executing buttons that interact with the editor content moves the focus back to the content.	`Enter`, `Space`
Move focus in and out of an active dialog window	`Ctrl`+`F6`	`⌘F6` (may require `Fn`)