Simple mod_perl Session and Persistent Script

[perl]

I have redhat 9 with mod_perl-1.99_07-5.

I'm just beginning into mod_perl.

Without loading any other library than the one loaded with redhat, Is
there a session variable and how can I hold a persistence object? I'm
looking for a simple example:

#!/usr/bin/perl

use strict;
use warnings;

#I guess I would need the type of declaration my, our, ...

$counter  #persistent object or global or what

$sess     #get the session var

print "session: " . $sess . " counter: " . $counter ."\n";

thanks,
rkl