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Preface > Text Conventions

Text Conventions

Throughout the book, we use a constant-width typeface to highlight any literal element of the HTML/XHTML standards, tags, and attributes. We always use lowercase letters for tags.[1] We use italic for filenames and URLs and to indicate new concepts when they are defined. Elements you need to supply when creating your own documents, such as tag attributes or user-defined strings, appear in constant-width italic in the code.

We discuss elements of the language throughout the book, but you’ll find each one covered in depth (some might say in nauseating detail) in a shorthand, quick-reference definition box that looks like the one that follows. The first line of the box contains the element name, followed by a brief description of its function. Next, we list the various attributes, if any, of the element: those things that you may or must specify as part of the element.


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