> LIST
10 REM FOLLOW USING LIGHT SENSOR
20 REM  USE SUBROUTINES FOR MOVEMENT & TURNING
21 REM ***REM NO WHEEL DETECTOR AVAIL IN BASIC ***
50 FOR N=1 TO 200
60 NEXT N
70 L=EYE
80 IF L>250 THEN GOSUB 200:ELSE GOSUB 400
100 GOTO 50
200 SPE "W O1 ER N ING PA1 PA1M U1 V ING UH2 H EH D
210 FWD 1
220 RETURN
400 LEF 4
410 RETURN