1 A=USR(32),0:CM=0:GOTO17
2 GETA$:IFA$=""THEN11
3 IFA$>"/"ANDA$<":"THENSF=VAL(A$)-SS*(A$="0"):GOTO11
4 IFA$="[147]"THENSYS36888:GOTO11
5 IFA$="!"THENSYS36867:GOTO11
6 IFA$="="THENSYS36882:GOTO11
7 IFA$="&"THENSYS36879:GOTO11
8 IFA$=""THENSYS36885:GOTO11
9 IFA$="+"THENCM=1+(CM=1):GOTO11
10 A=USR(33),0:LOAD"CMND",D0
11 X=X+USR(121)*SF:Y=Y-USR(122)*SF
12 IFX>331THENX=331
13 IFX<12THENX=12
14 IFY>239THENY=239
15 IFY<40THENY=40
16 A=USR(34),X,Y,0:A=USR(34),16,Y,6:A=USR(34),X,231,7:RETURN
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:IFX1>X2THENX4=X1:X1=X2:X2=X4
27 IFX1=X2THEN37
28 RA=ABS(X2-X1)/2:XC=X1+((X2-X1)/2):YC=Y1:A=USR(33),0:X5=X2:Y5=Y1
29 FORPH=0TO21*(null)/10STEP(null)/20
30 X4=(COS(PH)*RA)+XC+.5:Y4=.5+YC-((SIN(PH)*RA)*(YC-Y3)/(XC-X1))
31 IFY4>199THENY4=199
32 IFY4<0THENY4=0
33 IFY4=Y5THEN35
34 A=USR(66),X5,Y5,X4,Y4
35 X5=X4:Y5=Y4
36 NEXT
37 A=USR(32),0:GOTO17