The following two URLs show sort working but the sequence of the "sort comma delimited elements" is different from the document that I found and gave in the previous message. This leads me to believe that there was a later version 1.0 document. I would naturally prefer the sequence that we have implemented which is below but don't mind too much: tag path, schema, case, missing value, direction http://greta.pica.nl:1080/sru/?operation=searchRetrieve <http://greta.pica.nl:1080/sru/?operation=searchRetrieve&version=1.1&query=d c.title%20exact%20html&recordSchema=dc&sortKeys=RLV,pica,1&maximumRecords=10 &recordPacking=xml> &version=1.1&query=dc.title%20exact%20html&recordSchema=dc&sortKeys=RLV,pica ,1&maximumRecords=10&recordPacking=xml http://greta.pica.nl:1080/sru/?operation=searchRetrieve <http://greta.pica.nl:1080/sru/?operation=searchRetrieve&version=1.1&query=d c.title%20exact%20html&recordSchema=dc&sortKeys=YOP,pica,1&maximumRecords=10 &recordPacking=xml> &version=1.1&query=dc.title%20exact%20html&recordSchema=dc&sortKeys=YOP,pica ,1&maximumRecords=10&recordPacking=xml Janifer Janifer Gatenby New Business Development Manager OCLC PICA Schipholweg 99 2300 AW Leiden, The Netherlands + 31 71 524 65 00 + 31 71 522 31 19 (fax) [log in to unmask]