WDEF could do this, but it was rendered dead by System
7 (it infected the
System 6 and earlier desktop database, so when a disk was inserted, it
could spread to any uninfected desktop databases)
This caused me much grief, as I had a customized WDEF routine
I'd edit into every System file; it was Andy's source, modified
to do the Lisa-styled titlebar and widgets. But anti-virus
software of the day gave false positives for my WDEF.
-dq