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$=""THENSYS36885:GOTO10
9 A=USR(33),0:LOAD"CMND",D0
10 X=X+USR(121)*SF:Y=Y-USR(122)*SF
11 IFX>331THENX=12
12 IFX<12THENX=331
13 IFY>239THENY=40
14 IFY<40THENY=239
15 A=USR(34),X,Y,0:A=USR(34),16,Y,6:A=USR(34),X,231,7:RETURN
16 A=USR(33),0:A=USR(34),0,Y,6:A=USR(34),X,255,7:A=USR(0),0,1,4
17 A=USR(21):A=USR(17):A=USR(19):A=USR(1)
18 PRINTCHR$(14)"[147][206][207][212][197]: [204]INES MUST BE HORIZONTAL AND/OR":PRINT"VERTICAL.":PRINT
19 PRINT:PRINT"[197]NTER THE LINE SEGMENT LENGTH IN DOTS."
20 A$="":INPUT"([211]IXTY [60] DOTS PER INCH.)";A$:PRINT:L=VAL(A$):IFL<1THENL=3
21 PRINT"[197]NTER THE SPACE LENGTH IN DOTS."
22 A$="":INPUT"([211]IXTY [60] DOTS PER INCH.)";A$:SP=VAL(A$):IFSP<1THENSP=3
23 PRINT"[147]":A=USR(0),1,7,14:A=USR(1):A=USR(16):OPEN15,D0,15,"I":CLOSE15
24 A=USR(32),0
25 GOSUB2:A=USR(117):IFA<>16THEN25
26 SYS36864:X1=X-12:Y1=Y-40:A=USR(34),X,Y,1:A=USR(32),1
27 A=USR(117):IFA<>0THEN27
28 GOSUB2:A=USR(117):IFA<>16THEN28
29 X2=X-12:Y2=Y-40:A=USR(34),X,Y,2:A=USR(32),2
30 A=USR(117):IFA<>0THEN30
31 IF(X1=X2)AND(Y1=Y2)THENA=USR(33),1:A=USR(33),2:GOTO16
32 IFX1=X2THEN35
33 IFY1=Y2THEN39
34 A=USR(33),1:A=USR(33),2:GOTO24
35 IFY2<Y1THENY3=Y2:Y2=Y1:Y1=Y3
36 Y3=Y1+L:IFY3>Y2THENY3=Y2
37 A=USR(66),X1,Y1,X1,Y3:Y1=Y3+SP+1:IFY1>=Y2THEN43
38 GOTO36
39 IFX2<X1THENX3=X2:X2=X1:X1=X3
40 X3=X1+L:IFX3>X2THENX3=X2
41 A=USR(66),X1,Y1,X3,Y1:X1=X3+SP+1:IFX1>=X2THEN43
42 GOTO40
43 A=USR(33),1:A=USR(33),2:GOTO24