Difference between ${URI} and ${URI_REF}

All this talk about notifications had me poking around and I learned about using ${URI_REF} instead of ${URI}. It's magical.

• ${URI_REF} creates a link to the current record using the records display value. It's essentially... the same as;

  var link = 'https://';
  link += gs.getProperty('instance_name');
  link += '.service-now.com/';
  link += current.getLink();
  var display = current.getDisplayValue()
  template.print('<a href="' + url + '">' + display + '</a>');

• ${URI} creates a link to the current record using the text "Link".