A quickmemo from category cat is read and stored in integerarray BM. The quickmemo is selected by a hashvalue represented by crc1 and crc2, calculated with CRC32 algorithm for the content of the quickmemo. Even if the hash value doesn't describe the quickmemo unambiguous, the probability of wrong selection is low. If two quickmemos have the same hashvalues, one of them need to be modified. The hashvalues may be calculated for an icon with ICONHASH.