Global Variable Question

[Pierre J. Nicolas]

What would happen if I'm using the "CGI.pm" while running
the modperl module and I set an environment variable in a cgi-based
script with "$ENV{'var'} = $value.
I only care that this variable doesn't get overwritten during
this request.  Could another execution of the same script
cause this env. variable to be updated or will the current request
have exclusive rights to it.  In other words, is it global to
the current request or the entire "modperl" environment?


Thanks,

Pierre