This heading explains the working of tasks or instructions that you have just completed.

You will also find some other learning aids in the book, including:

These are short multiple-choice questions intended to help you test your own understanding.

These practical challenges give you ideas for experimenting with what you have learned.

You will also find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.

Code words in text are shown as follows: "The root folder contains the AndroidManifest.xml file; it's important that the package name and the activity name defined in the files match the arguments used when launching the ./create command"

A block of code is set as follows:

({
    baseUrl: 'js/',
    paths: {
        mustache: 'libs/mustache',
        alice: 'libs/alice.min',
        text: 'libs/require/plugins/text'
    },
    name: 'main',
    out: 'js/main-built.js'
})

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

function processImages(){

  var pixelRatio = window.devicePixelRatio;
  if(window.devicePixelRatio > 1) {
    var matches = document.querySelectorAll("img.highRes");
    for(var i = 0; i < matches.length; i++) {
      
      matches[i].width = (matches[i].width / pixelRatio);
    
    }
  }

Any command-line input or output is written as follows:

$ cordova create ~/PhoneGapProjects/PGGettinStarted/ch06/storage SampleStorage

New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "On Mac the command-line tool is named Terminal and you can find it by navigating to Applications | Utilities | Terminal."