Shortcodes for SMS Commands

A lot of the SMS codes are pretty long for texting. It would be great to have shortcodes in conjunction with the "long shortcodes" for example, PV for pastvisitors, m for mark, um for unmark, so having both would both please newbs or people who couldn't remember, and make things quicker for slick experienced users. Having a pocket guide sorta doesn't feel warm & fuzzy.