placardMM property
Other alternatives to main #actor.
Implementation
//
// NOTE First record: 'FirstActor'
Map<String, Map<String, String>> placardMM = {
'FirstActor': {
'actor': 'first',
'sender': 'fS',
'receiver': 'fR',
'command': 'fC',
'msg': 'fMsg'
}
};