Cell edit mode

Edit the active cell F2 U
Insert or edit comment Shift F2 Fn F2
Cancel entry Esc Esc
Select one character right Shift
Select one character left Shift
Move one word right Ctrl
Move one word left Ctrl
Select one word right Ctrl Shift
Select one word left Ctrl Shift
Select to beginning of cell Shift Home Fn
Select to end of cell Shift End Fn
Delete to end of line Ctrl Delete Delete
Delete character to the left of cursor Backspace Delete
Delete character to the right of cursor Delete Fn Delete
Start a new line in the same cell Alt Enter Return