{HEAD ~ A computer} implemented method for determining a requested map location includes providing a database holding a plurality of {TAIL ~ map objects} having respective descriptors and loci 
{ HEAD ~ A computer } implemented method for determining a requested map location includes providing a database holding a plurality of { TAIL ~ map objects } having respective descriptors and loci
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH