Referring to FIGS 15 and 16, {HEAD ~ sliding pane} 18 may be moved between {TAIL ~ its open and closed positions} by drive assembly 90 
moved between
Referring to FIGS 15 and 16 , { HEAD ~ sliding pane } 18 may be moved between { TAIL ~ its open and closed positions } by drive assembly 90
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH