# Parse header
    my ($sig, $ver, $cnt, $reserved) = unpack('l4', $raw);

    # TODO: validate (signature, reverse byte order, version)
    return {SIG => $sig, VER => $ver, CNT => $cnt, RSV => $reserved};

##</code><code>##

for my $template ("N", "V") {
    # Parse header
    my ($sig, $ver, $cnt, $reserved) = unpack($template.'4', $raw);
    if($sig==0x1A412743) {
        return {unpack => $template, VER => $ver, CNT => $cnt};
    }
}
# no match: not a .2bit header
return undef;