 as the very
first thing in the application's main program as well; Its <I>argv[0]</I>
argument is only used to indicate whether the executable has a stderr
channel (any non-null value) or not (the value null). If <B><A HREF="Panic.html">Tcl_SetPanicProc</A></B>
is never called and no debugger is running, this determines whether
the panic message is sent to stderr or to a standard system dialog.
<P>
<B>Tcl_GetNameOfExecutable</B> simply returns a pointer to the
internal full path name of the executable file