User card as a BBCode

Hey!

I'd like to create a (series of) BBCodes that roughly mimic the user info display on, for example, the Users Online page, with the addition of a short descriptive blurb about the user. I've looked around in the userInformation* templates, but there's quite a lot of including going on in there so I can't tell with any reasonable degree where to start. I don't expect anyone to write them for me, just need to glean a general idea on where to look to mimic this display.