Is it possible to execute a system command from a script? I'd like to use the scripting interface to do something that user tools aren't quite powerful enough for (run PerlTidy on a selection). I realize that I could set up a user tool to do the shell call and call that from my script, but that seems hackish. I'm hoping for a cleaner interface.

No, no other interface for system commands than user tools do exist at the moment.

That's what I was afraid of. Feature request sent to IDM...