Im trying to write a menu driven Perl script and I just cant figure out how to do a "Go Back" or an "Exit" option. Below is the perl code Ive written so far. Any help would be great!"

#!/usr/bin/perl -w
use strict;


use Term::ANSIColor qw(:constants);

print GREEN, "------------------------------------\n", RESET;
print YELLOW, "              Options                \n", RESET;
print GREEN, "------------------------------------\n", RESET;
print "\n";
print "\n";
print GREEN, "1.    Adtran\n", RESET;
print GREEN, "2.    Alcatel\n", RESET;
print GREEN, "3.    Calix\n", RESET;
print GREEN, "4.    Juniper\n", RESET;
print RED, "5.  Exit\n", RESET;
print "\n";
print "\n";
print YELLOW, "Selection : ", RESET;
my $selection = <>;
chomp ($selection);
print "\n";

if ($selection == 1) {
    print "\n";
    print GREEN, "------------------------------------\n", RESET;
    print YELLOW, "              Adtran                \n", RESET;
    print GREEN, "------------------------------------\n", RESET;
    print "\n";
    print "\n";
    print GREEN, "1.    Adtran 1148V\n", RESET;
    print GREEN, "2.    Adtran 1100F\n", RESET;
    print YELLOW, "3.    Go Back\n", RESET;
    print RED, "4.    Exit\n", RESET;
    print "\n";
    print "\n";
    print YELLOW, "Selection : ", RESET;
    my $select_Adtran = <>;
    chomp ($select_Adtran);
    print "\n";

    if ($select_Adtran == 1) {
        print "1148V Options\n";
    }
    if ($select_Adtran == 2) {
        print "1100F Options\n";
    }
    if ($select_Adtran == 3) {
        print "Go Back a Screen\n";
    }
    if ($select_Adtran == 4) {
        print "Exit\n";
    }
}
if ($selection == 2) {

}
if ($selection == 3) {

}
if ($selection == 4) {

}
if ($selection == 5) {

}
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