The cover defines a dispensing orifice and defines an edge for severing {TAIL ~ at least part} of the membrane as the cover is moved from {HEAD ~ the outer position} to the inwardly displaced position 
The cover defines a dispensing orifice and defines an edge for severing { TAIL ~ at least part } of the membrane as the cover is moved from { HEAD ~ the outer position } to the inwardly displaced position
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH