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7130 IF B3<>0 THEN PRINT "FROM E TO S":W1=B4:X=B5:GOTO 6920
9810 IF K$="Y" AND RND(1) <.5 THEN GOTO 9820 ELSE GOTO 9770
...
4835 IF V$="K" THEN A$="+K+" ELSE IF V$="M" THEN A$="!M!" ELSE IF V$="
+R" THEN A$="?R?"
1850 IF K3=0 AND EX(Q1,Q2)=0 THEN GOTO 8500 ELSE GOSUB 6000
1800 IF V$="K" THEN A$="+K+" ELSE IF V$="R" THEN A$="?R?" ELSE IF V$="
+M" THEN A$="!M!":Z1=R1:Z2=R2