Preferably {HEAD ~ the articulated connection} is of {TAIL ~ a “hide away” type} and comprises a movable member to which the plug is constrained so as to present a number of degrees of freedom 
is of
Preferably { HEAD ~ the articulated connection } is of { TAIL ~ a “ hide away ” type } and comprises a movable member to which the plug is constrained so as to present a number of degrees of freedom
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL 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