If you're using vi/vim for real programming, you'll want to know about tag searching as well - it's one of the better ways to deal with multi-file source code.

If you're using vi/vim for real programming, you'll want to know about tag searching as well - it's one of the better ways to deal with multi-file source code. In both nvi and vim, control-] jumps to the tag under the cursor, and control-t pops back to the previous context. (You'll need to run a program such as ctags on the source to create the tag index first.)