The Developer Notes
You'll notice that as you add content within PowerCMS there will be "Developer Notes" listed at the bottom of the Detail page. These notes include the code you will need to apply to your PHP pages wherever you wish this content to display.
One thing to note is that the code assumes that you are placing the files in the root of your site. If this is not the case, for example, you place files within a subdirectory, you will need to adjust the path accordingly.