Ferenc Stelcz wrote: [...] n-by-m table: has n rows and m columns, so when I'm writing about "1-by-m" or "2-by-m" I mean "m-by-1" or "m-by-2"... __________ Information from ESET Smart Security, version of virus signature database 4146 (20090611) __________ The message was checked by ESET Smart Security. http://www.eset.com