671 IFA$<>"-"ORD>0THEN820 870 IFA$="A"ORA$=CHR$(30)THENY=Y-1 880 IFA$="Z"ORA$=CHR$(31)THENY=Y+1 890 IFA$=","ORA$=CHR$(29)THENX=X-1 910 IFA$="."ORA$=CHR$(28)THENX=X+1