{HEAD ~ The pressing device} is configured to press {TAIL ~ the openably closable unit} toward the open position in which the unit is extended 
{ HEAD ~ The pressing device } is configured to press { TAIL ~ the openably closable unit } toward the open position in which the unit is extended
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH