{HEAD ~ The skylight construction} comprises {TAIL ~ a frame means} extending about the opening and including means securable about the opening, and a translucent or transparent means covering the opening and extending at its edges to overlie the frame means 
comprises
{ HEAD ~ The skylight construction } comprises { TAIL ~ a frame means } extending about the opening and including means securable about the opening , and a translucent or transparent means covering the opening and extending at its edges to overlie the frame means
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH