enterNewDomain( "ROXY") means 'return' unless lsStateData = [:]

3 different kinds of function: 
 ï new game (load all state-data from stored cast in Roxy'sIF current 
       lsStateData is [:] ), 
 ï outer-domain entry (stash existing state-data in a local variable,
       load new state-data from stored cast, then tuck the stashed Roxy-
       data in a single state-variable #StateOnIce), 
 ï return to roxy's (get and stash the value of #currentDomain in a local, 
       get and stash the value of #StateOnIce in a local list, then set
       lsStateData to it's value [replacing the list with its former property], 
       and finally set #lastDomainVisited to the former #currentDomain)