Reminds me of trick from the Commodore BASIC days, where you could use "?" as a replacement for "PRINT" to save a whopping 4 bytes. Seems silly now, but back then it made all the difference.
People certainly did do a lot to save space through omitting spaces, using ";" to separate statements instead of new lines etc.
Edit: found a list of the keyword abbreviations. More then I expected/remembered. http://www.c64-wiki.com/index.php/BASIC_keyword_abbreviation
You can always use Emacs and YASnippet. Also, Eclipse has a good couple of extremely handy word expansions.