text: /*
  Demonstrates callback hell, indented
  */
  function first(data, cb){
    console.log('Executing first');
    setTimeout(cb, 1000, data);
  }
  
  function second(data, cb){
    console.log('Executing second');
    setTimeout(cb, 1000, data)
  }
  
  function third(data, cb){
    console.log('Executing third');
    setTimeout(cb, 1000, data)
  }
  
  first('data', function(text1){
    second(text1, function(text2){
      third(text2, function(text3){
        console.log('done: ', text3); // indented
      })
    })
  })
  