8.3.1. Inserting New Text

a	Append after cursor.
A	Append to end of line.
i	Insert before cursor.
I	Insert at beginning of line.
o	Open a line below cursor.
O	Open a line above cursor.
Esc	Terminate insert mode.
CTRL-J	Move down one line.
Return	Move down one line.
CTRL-I	Insert a tab.
CTRL-T	Move to next tab setting.
Backspace	Move back one character.
CTRL-H	Move back one character.
CTRL-U	Delete current line.
CTRL-V	Quote next character.
CTRL-W	Move back one word.

8.3.2. Changing and Deleting Text

cw	Change word.
cc	Change line.
C	Change text from current position to end of line.
dd	Delete current line.
ndd	Delete n lines.
D	Delete remainder of line.
dw	Delete a word.
d}	Delete up to next paragraph.
d^	Delete back to beginning of line.
d/pat	Delete up to first occurrence of pattern.
dn	Delete up to next occurrence of pattern.
dfa	Delete up to and including a on current line.
dta	Delete up to (but not including) a on current line.
dL	Delete up to last line on screen.
dG	Delete to end of file.
p	Insert last deleted text after cursor.
P	Insert last deleted text before cursor.
rx	Replace character with x.
Rtext	Replace with new text (overwrite), beginning at cursor.
s	Substitute character.
4s	Substitute four characters.
S	Substitute entire line.
u	Undo last change.
U	Restore current line.
x	Delete current cursor position.
X	Delete back one character.
5X	Delete previous five characters.
.	Repeat last change.
~	Reverse case.

8.3.3. Copying and Moving

Y	Copy current line to new buffer.
yy	Copy current line.
"xyy	Yank current line to buffer x.
"xd	Delete into buffer x.
"Xd	Delete and append into buffer x.
"xp	Put contents of buffer x.
y]]	Copy up to next section heading.
ye	Copy to end of word.

Buffer names are the letters a–z. Uppercase names append text to the specified buffer.