it would be very useful to to able to launch & close other applications from B4PPC, so that we could develop new schedulers, tasklists, appli-swap, ....
You can already do that using the Shell command (at least the opening of other programs, see the help file for more info). It really helps in writing nice programs !
I just saw that you can do this if you install Mortscript (a freeware program from http://www.sto-helit.de/) and run it with the shell command of Basic4ppc.