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..