Select Code to Download

$page = join "", @prep; # since the lines are in an array
if (my ($tag) = $page =~ m/<!--(.+) -->/) {
...
        subb; exit;
    } # ...etc...
}

my $subs = {
    a => \&suba,
...
} else {
    warn "Unknown tag <$tag> in file <$prepage>\n";
}

my $tag;
while (<PAGE>) {
...
}
close <PAGE>;
# proceed to call the tag handler