duint32 dwgCompressor::long20CompressionOffset(){
//    duint32 cont = 0;
    duint32 cont = 0x0F;
    duint8 ll = compressedByte();
    while (ll == 0x00 && compressedGood){
//        cont += 0xFF;
        ll = compressedByte();
    }
    cont += ll;
    return cont;
}
duint32 dwgCompressor::long20CompressionOffset(){
 
    duint32 cont = 0x0F;
    duint8 ll = compressedByte();
    while (ll == 0x00 && compressedGood){
 
        ll = compressedByte();
    }
    cont += ll;
    return cont;
}