input$ = "WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW"
      PRINT "Input:  " input$
      rle$ = FNencodeRLE(input$)
      output$ = FNdecodeRLE(rle$)
      PRINT "Output: " output$
      END

      DEF FNencodeRLE(text$)
      LOCAL n%, r%, c$, o$
      n% = 1
      WHILE n% <= LEN(text$)
        c$ = MID$(text$, n%, 1)
        n% += 1
        r% = 1
        WHILE c$ = MID$(text$, n%, 1) AND r% < 127
          r% += 1
          n% += 1
        ENDWHILE
        IF r% < 3 o$ += STRING$(r%, c$) ELSE o$ += CHR$(128+r%) + c$
      ENDWHILE
      = o$

      DEF FNdecodeRLE(rle$)
      LOCAL n%, c$, o$
      n% = 1
      WHILE n% <= LEN(rle$)
        c$ = MID$(rle$, n%, 1)
        n% += 1
        IF ASC(c$) > 128 THEN
          o$ += STRING$(ASC(c$)-128, MID$(rle$, n%, 1))
          n% += 1
        ELSE
          o$ += c$
        ENDIF
      ENDWHILE
      = o$