Really? Well, it would have to be present in all of the OS, I imagine. For example, my name isn't automatically capitalized on my Blackberry, so kent --> Kent.

Also, "putnum" would put my phone number. or "wel" --> "we'll", "il" --> "I'll". I can type incredibly fast thanks to these replacements, because i have tied words like "th" to "the" which saves me an e, or ddt to didn't, or when I have to type in Spanish or French, I have bano to baño, or putting two Os gives me an O with an accent. It saves A LOT of time. Some more practical usages to speed up the OS would be 'bday' to birthday, cmd --> command, I also programmed "fbalbum" to the main album on my facebook page to send people links directly. I also programmed the letters that correspond to numbers to put my phone number, saves pressing the function key hr to hour, hrs to hours, mo to month, and mos to months. I've always used "putsig" to put "Yours truly, Kent" blah blah blah. There are infinite uses for this and I would LOVE for there to be an app tied into the OS to do this. It uses very little ram (on a BB at least) and helps out A LOT in every day tasks.

"other considerations, do you recursively expand the contents, do you automatically expand over 1/2/3 message boundaries?"

I didn't really understand that. I'm not much a programmer. Lol.