505     Byte mainByte;  in SzGetNextFolderItem()  local
509     RINOK(SzReadByte(sd, &mainByte));  in SzGetNextFolderItem()
510     if ((mainByte & 0xC0) != 0)  in SzGetNextFolderItem()
512     idSize = (unsigned)(mainByte & 0xF);  in SzGetNextFolderItem()
533     if ((mainByte & 0x10) != 0)  in SzGetNextFolderItem()
545     if ((mainByte & 0x20) != 0)  in SzGetNextFolderItem()
715       Byte mainByte;  in ReadUnpackInfo()  local
719       SZ_READ_BYTE_2(mainByte);  in ReadUnpackInfo()
720       if ((mainByte & 0xC0) != 0)  in ReadUnpackInfo()
722       idSize = (mainByte & 0xF);  in ReadUnpackInfo()
731       if ((mainByte & 0x10) != 0)  in ReadUnpackInfo()
741       if ((mainByte & 0x20) != 0)  in ReadUnpackInfo()