History for Useful queries

Revisions
 Nigel Stanger on 29 Jun : Updated Useful queries
 Nigel Stanger on 29 Jun : Updated Useful queries
 Nigel Stanger on 14 Jun : Updated Useful queries
 Nigel Stanger on 14 Jun : Updated Useful queries
 Nigel Stanger on 14 Jun : Created Useful queries