said slot having {TAIL ~ a cross section configuration} of a type to allow passage of said control line therethrough but preventing {HEAD ~ passage} of said keeper element 
said slot having { TAIL ~ a cross section configuration } of a type to allow passage of said control line therethrough but preventing { HEAD ~ passage } of said keeper element
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH