The present invention includes an apparatus for an active/inactive door system wherein an inactive door lock prevents the locking of an active door lock unless {HEAD ~ the inactive door lock} is first engaged in {TAIL ~ a locking position} 
is engaged in
The present invention includes an apparatus for an active / inactive door system wherein an inactive door lock prevents the locking of an active door lock unless { HEAD ~ the inactive door lock } is first engaged in { TAIL ~ a locking position }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL