As shown in FIG 4, translucent sheet 52 is supported with a slight distance between bottom 20 and sheet 52 to provide an opening beneath sheet 52 so that {HEAD ~ received messages} are readily slid under {TAIL ~ translucent sheet} 52 as shown by arrow 58 
are readily slid under
As shown in FIG 4 , translucent sheet 52 is supported with a slight distance between bottom 20 and sheet 52 to provide an opening beneath sheet 52 so that { HEAD ~ received messages } are readily slid under { TAIL ~ translucent sheet } 52 as shown by arrow 58
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 HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH