Programs that are useful by itself could install with a counter that's already 1 higher. For example: if all the packages that depend on Xterm are removed, the counter of Xterm is still not zero. So it would not be deleted. Thinking a bit longer: in this way almost no programs reach zero.
Larry de Graaf >Note that you can't just delete packages as count goes to zero >(or the last dependand is removed) because it may provide >something useful by itself. >Example: You may still want to keep "xterm", even if you removed all the >programs that depend on it. > >Helge Hafting
