Dragan i think you were right:

Terminate and Stay Resident (TSR) is a system call in DOS operating systems that returns control to the system as if the program has quit, but keeps the program in memory. (keeping some little distances for me its the same, in both operating systems the program is still alive)
http://en.wikipedia.org/wiki/Terminate_and_Stay_Resident

>>I don't agree. Anything that minimizes to the task bar is still running.

>Um, I actually agree with you - a lot (of memory and processor time) was lost in translation.

>>>"Tray" is Windowsese for "TSR" in DOS.