code: function computeRowPosition(plot, cursor, index, count) {
          var width = plot.width();
          var height = plot.height();
          var textAlign = 'left';
          var fontSizeInPx = Number(cursor.fontSize.substring(0, cursor.fontSize.length - 2));
  
          var y = cursor.y;
          var x = cursor.x;
  
          if (x > (width / 2)) {
              x -= constants.labelPadding;
              textAlign = 'right';
          } else {
              x += constants.labelPadding;
          }
  
          if (y > (height / 2)) {
              y -= constants.labelPadding * (count - index) + fontSizeInPx * (count - 1 - index);
          } else {
              y += constants.labelPadding * (index + 1) + fontSizeInPx * (index + 1);
          }
  
          return {
              x: x,
              y: y,
              textAlign: textAlign
          };
      }
docs: The text displayed next to the cursor can be stacked as rows and their positions can be calculated with this function.
  The bottom one has the index = 0, and the top one has the index = count -1. Depending on the current cursor's possition
  relative to the center of the plot, index and count, the positions will be computed like this:
  
  |
  two | two
  one | one
  zero | zero
  --------+--------
  two | two
  one | one
  zero | zero
  |