] Everyone knows they should have a passing knowledge of
] vi, but most people groan at the thought of using it. In
] today's article, I'd like to demonstrate some of the
] tricks that vi has up its sleeve. It really is a powerful
] little editor and I'm constantly amazed at its number of
] built-in shortcuts.

A ton of neat little tricks on using "vi". I'm in and out of vi a dozen times a day, and I learned tricks from this page I never knew about!

Reference: Using the vi Editor