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are observed. Basically, do not click the mouse in the application's
window(s) when you've entered the debugger and do not click in the
debugger's window(s) while the application is running.  Doing either
one is not necessarily fatal, but it can confuse things that are going
on and produce unexpected results.

Be aware that most perlTk applications have a central event loop.
User actions, such as mouse clicks, key presses, window exposures, etc
will generate 'events' that the script will process. When a perlTk
application is running, its 'MainLoop' call will accept these events
and then dispatch them to appropriate callbacks associated with the
appropriate widgets.

=head2 Debugging CGI Scripts

One advantage of ptkdb over the builtin debugger(-d) is that it can be
used to debug CGI perl scripts as they run on a web server. Be sure
that that your web server's perl instalation includes Tcl::Tk.

Change your