Vim

Enter insert mode before cursor

Enter insert mode after cursor

Return to normal mode

Enter visual mode (character selection)

Enter visual line mode

Enter command-line mode

Move left, down, up, right

Jump to start of next word

Jump to start of previous word

Jump to start of line

Jump to end of line

Go to first line of file

Go to last line of file

Go to line number n

Delete character under cursor

Delete current line

Copy (yank) current line

Paste after cursor

Undo last change

Redo last undone change

Change to end of word

Search forward for pattern

Search backward for pattern

Repeat last search in same direction

Replace all occurrences of old with new in file

Save file

Quit

Save and quit

Quit without saving