1 GOTO16
2 GETA$:IFA$=""THEN10
3 IFA$>"/"ANDA$<":"THENSF=VAL(A$)-SS*(A$="0"):GOTO10
4 IFA$="[147]"THENSYS36888:GOTO10
5 IFA$="!"THENSYS36867:GOTO10
6 IFA$="="THENSYS36882:GOTO10
7 IFA$="&"THENSYS36879:GOTO10
8 IFA$=""THENSYS36885:GOTO10
9 A=USR(33),0:LOAD"CMND",D0
10 X=X+USR(121)*SF:Y=Y-USR(122)*SF
11 IFX>331THENX=12
12 IFX<12THENX=331
13 IFY>239THENY=40
14 IFY<40THENY=239
15 A=USR(34),X,Y,0:A=USR(34),16,Y,6:A=USR(34),X,231,7:RETURN
16 A=USR(32),0
17 GOSUB2:A=USR(117):IFA<>16THEN17
18 SYS36864:X1=X-12:Y1=Y-40:A=USR(34),X,Y,1:A=USR(32),1
19 A=USR(117):IFA<>0THEN19
20 GOSUB2:A=USR(117):IFA<>16THEN20
21 X2=X-12:Y2=Y-40:A=USR(34),X,Y,2:A=USR(32),2
22 A=USR(117):IFA<>0THEN22
23 GOSUB2:A=USR(117):IFA<>16THEN23
24 X3=X-12:Y3=Y-40:A=USR(34),X,Y,3:A=USR(32),3
25 A=USR(117):IFA<>0THEN25
26 A=USR(33),1:A=USR(33),2:A=USR(33),3:X4=X1-(X2-X3):Y4=Y1-(Y2-Y3)
27 IF(X4<0)OR(X4>319)OR(Y4<0)OR(Y4>199)THEN30
28 A=USR(66),X1,Y1,X2,Y2:A=USR(66),X2,Y2,X3,Y3:A=USR(66),X3,Y3,X4,Y4
29 A=USR(66),X4,Y4,X1,Y1
30 A=USR(32),0:GOTO16