# Arrow Keys

h : <-
j : ↓
k : ↑
l : ->

# Comment/Uncomment Multiple lines

<ctrl + V> <j/k> <shift + i> <add_whatever_comment_symbol>

or

<shift + v> <j/k> :norm i#

<shift + v> <j/k> :norm x // Use : norm xx if there are more characters to delete or :norm ^x if the comments are indented.

# Undo/Redo

u : undo

<ctrl + r> : redo