http://forum.1cpublishing.eu/showthread.php?t=29282
this has been posted and acknowledged before, but, for good order and to have things in one place, i'm posting it here in the 4.12 wishlist thread - as per the above link, there's a bug that doesn't correctly, in multiplayer, display on/off state of engines. would be great if this could get fixed in 4.12.