Common map_mc interactions
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- Implement these -
* .mapData = 
*	.setMapData( data, doEvent_bool )
	( doEvent_bool controls whether "onMapLoad" is dispatched )
*	.addEventListener("onMapLoad", this);
*	.removeEventListener("onMapLoad", this);


- Externally re-write these -
*		.mapFile = newFile;
*		.map.width;
*		.map.height;


- Skip these  &  Externally remove? -
*		.setEditable( false, false );		(value, doEvent)
*		.setSelectable( false, false );	(value, doEvent)

