[MacPerl] Detecting MacPerl app vs MPW tool?

[Tom Sackett]

How can a script know if it's being run in the MacPerl application or in
the MPW tool? I need a make a script look for command line arguments if
it's run in MPW, and environment variables if it's run in the MacPerl
application.

thanks,
Tom Sackett
Seattle, Washington, USA
[EMAIL PROTECTED]