confused with names

[Dan Mills <dm cs duke edu>]

I've a little Q..

What's the difference between gtk, gtk+, gtk+10, gtk--?  was this actually
done on purpose..?

-Dan

         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 ////    | Dan Mills                  -o) |
|--00    | Duke Class of 2000         /\\ |
C   `    | email: dm@cs.duke.edu     _\_v |
 \ ~/    ~~~|~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  | |---o---3