code: function formatjson(pis) {
  	return pis.map(function(pi) {
  		var newpi = {};
  		newpi[pi.tag] = pi.att;
  		return newpi;
  	});
  }
docs: Format processing instructions
  for slight improved readability.
  @param {Array<Instruction>} pis
  @returns {Array<object>}