Vi inherits as class of commands from its predecessor ex, accessible through what is sometimes called colon mode. Common examples are :wq (write and quit) and :s/X/Y/ (substitute Y for X).

The KDE desktop environment's advanced text editing program, which is called Kate, has a new input mode that is designed to mimic the functionality of the text-based Vi editor.

Two hopefully quick question to the vi gurus out there:1. How to recall previous VI commands and edit them2. How to replace a string with a string with a newline in it like this s/STRING/STRING ...