Select Code to Download

my @lines = (<>);
my $text = join "", @lines;

if ($text =~ m/(   \(LABEL O 1\))(\n.+?)(   \(STOP\)\n)/s) {
    $labelo1 = $1;
    $labelo1instructions = $2;
...
else {
print "(LABEL O 1)\n   NEWLIGINSTRUCTIONS HERE\n";
}