100 POKE56579,255:Z=50
110 POKE53280,0:POKE53281,0:PRINT"[147][155]           LAUFLICHT"
120 PRINT"           [196][196][196][196][196][196][196][196][196]"
130 PRINT""TAB(10)" 12345678"
140 PRINT"  <+> = SCHNELLER  <-> = LANGSAMER"
150 PRINT""TAB((Z/10)+1)" ^ "
160 PRINT"  [173][177][177][177][177][177][177][177][177][177][177][177][177][177][177][177][177][177][177][177][177][177][177][177][177][177][177][177][177][177][189]"
170 PRINT"               SPEED"
180 FORI=0TO7
190 POKE56577,2^I:PRINT""TAB(I+10)" [209] "
200 GOSUB220:FORJ=0TOZ:NEXT
210 NEXT:PRINT""TAB(15)"       ":GOTO180
220 GETZ$:IFZ$="-"THENZ=Z+10:IFZ>300THENZ=300
230 IFZ$="+"THENZ=Z-10:IFZ<=0THENZ=0
240 PRINT""TAB((Z/10)+1)" ^ "
250 RETURN