This provides for locking the sash in place along {HEAD ~ a vertical axis} of {TAIL ~ the jamb liner} when the sash is tilted away from the vertical axis of the jamb liner 
This provides for locking the sash in place along { HEAD ~ a vertical axis } of { TAIL ~ the jamb liner } when the sash is tilted away from the vertical axis of the jamb liner
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH