What is XML, and Why Should You Care?--McIlroy

Style Sheets
Do you know style sheets? We've had them for years now in our desktop applications, from Microsoft Word to PageMaker to QuarkXPress. Style sheets are used to simplify the process of formatting text. See that sub-heading just above? It says "Style Sheets" and it's in bold text. If I were working in Word and wanted to change the format of that sub-heading and all the other ones in this article to bold-italic, I'd have two choices. The hard way would be to do it manually: Select each one, and change the format on each from bold to bold-italic. The easy way is to assign a "style" to each one, let's say a style called . Then I can just use the Style commands in Word to change the appearance of to bold-italic. All of my sub-headings would change at once.