wiki update

updated wiki (just a small part on Preliminary Studies).

app update:

• still can’t figure out how to fix bug (see previous post: collaboration v1.0). once connected on a wildfire server, backspace is sent accordingly to other users (but shows an unknown character) in a collaboration session, but on jabber.org server, if a user types the backspace, the user suddenly leaves the session for an unknown reason. have to fix this bug…
•  moreover, there were also problems encountered in outputting the text on the text area. has to do with the positioning.

that’s all for now, i guess…

-ariel