BackgroundI'vewrittenasmallRepastSimphonyprogramwhichdemonstrateshowtocreateavirtualcityandmovesomeagentsaroundaroadnetwork.I'musingthistypeofmodelformyPhD(anagent-basedmodelofcrime/burglar)andhopefullythisprogramwillbeusefulforanyonewhoneedstobeabletomoveagentsaroun