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
19 X1=X-12:Y1=Y-40:A=USR(34),X,Y,1:A=USR(32),1
20 A=USR(117):IFA<>0THEN20
21 GOSUB2:A=USR(117):IFA<>16THEN21
22 X2=X-12:Y2=Y-40:A=USR(34),X,Y,2:A=USR(32),2
23 A=USR(117):IFA<>0THEN23
24 A=USR(33),1:A=USR(33),2
25 IFX1=X2THENIFY1=Y2THEN16
26 IFX1>X2THENX3=X2:X2=X1:X1=X3
27 IFY2=Y1THEN16
28 A=USR(33),0:X3=(X1+X2)/2:Y3=Y1-(Y2-Y1)
29 IFY3>199THENY3=199
30 IFY3<0THENY3=0
31 A=USR(66),X1,Y1,X1,Y2:A=USR(66),X1,Y2,X3,Y2:A=USR(66),X3,Y2,X3,Y3
32 A=USR(66),X3,Y3,X2,Y3:A=USR(66),X2,Y3,X2,Y1:A=USR(32),0:GOTO16