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 set practical challenges and 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: " If you now navigate to the level directory using Windows Explorer, you will notice a new folder called Layers. Inside that folder, you will see a file named SpawnPoints.lyr."

A block of code is set as follows:

    <Constraints>
        <Align mode="fixed" />
        <Position top="100" left="100" width="800" height="600" />
    </Constraints>

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: "Look in the UI:Functons:MainMenu:AddButton node of the mm_main UI Action that creates the button with the @ui_SoundSettings caption".