is so small that it is not visible to the
  // human eye (tested with the two I have at my disposal).
  var lIncrement = 0.001;
  var lNewLastValue = parseFloat(lLastValue) + lIncrement;

  return lDrawingInstructions.replace(lLastValue, lNewLastValue);
}

nodeListToArray(document.querySelectorAll("path"))
  .filter(function (pElement) {
    return pElement.parentElement.classList.contains("edge");
  })
  .forEach(function (pElement) {
    pElement.attributes.d.value = skewLineABit(pElement.attributes.d.val