A feature similar to macros in input mode is word abbreviation. This allows you to type a short word and have it expanded into a longer word or words. The commands are :abbreviate and :unabbreviate (:ab and :una) and have the same syntax as :map. For example:
:ab eecs Electrical Engineering and Computer Sciences
The editor has a number of short commands which abbreviate longer commands which we have introduced here. You can find these commands easily on the quick reference card. They often save a bit of typing and you can learn them as convenient.