TRAILS.BAS

0 REM TARILS
10 HGR2:SX=0:SY=0:EX=279:EY=191
20 DIM P(4):P(2)=SX:P(3)=SY
30 P(0)=P(2):P(1)=P(3):P(2)=INT(RND(EX)*EX):P(3)=INT(RND(EY)*EY)
40 HPLOT P(0),P(1) TO P(2),P(3)
50 FOR I = 1 TO 20:NEXT I
60 GOTO 30