ASCII-Tabelle

  const LineHeight = 10;
  let   yPosition;

/**** clear ****/

  function clear () {
    Bangle.setLCDMode();                              // use normal display mode
    g.clear();
    g.setFont('4x6');
    yPosition = 0;
  }

/**** println ****/

  function println () {
    let StringToDraw = '';
    for (let i = 0, l = arguments.length; i < l; i++) {
      StringToDraw += arguments[i];           // implicitly also does "toString"
    }
    g.drawString(StringToDraw, 0,yPosition);
    yPosition += LineHeight;
  }

/**** draw a simple ASCII table ****/

  let HexDigits = '0123456789ABCDEF';

  clear();
  println();
  println('     | -0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -A -B -C -D -E -F |');
  println('  ---+-------------------------------------------------+---');
    for (let i = 0; i < 16; i++) {
      let StringToDraw = '  ' + HexDigits[i] + '- | ';
        for (let j = 0; j < 16; j++) {
          let CharCode = i*16 + j;
          StringToDraw += ' ' + (
            (CharCode < 32) || ((CharCode >= 127) && (CharCode < 160))
            ? ' '
            : String.fromCharCode(CharCode)
          ) + ' ';
        }
      println(StringToDraw + '| ' + HexDigits[i] + '-');
    }
  println('  ---+-------------------------------------------------+---');
  println('     | -0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -A -B -C -D -E -F |');