VLWRIT(V)
$(VARIABLE LIST WRITE.  V, A LIST OF VARIABLES, IS WRITTEN IN THE
OUTPUT STREAM.)
     SAFE VLWRIT.
(1)  VP=V.  CWRITE($=().  IF VP=() THEN ( CWRITE($=)).  RETURN ) ELSE
     ( ADV(VP.VL,VP).  CLOUT(VL) ).  WHILE VP NE () DO ( CWRITE($=,).
     ADV(VP.VL,VP).  CLOUT(VL) ).  CWRITE($=)).  RETURN..