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What Is a Required Sub-element
What Is a Required Sub-element? - XHTML Tutorials - Introduction To Element Content Syntax
✍: FYIcenter.com
A required sub-element is a sub-element that you must included in the parent element. Most sub-elements are optional. But there are some sub-elements that are required by their parent elements.
Here are two good examples:
<!-- Valid: "head" requires "title" --> <head> <title>XHTML FAQs by FYIcenter.com</title> </head> <!-- Valid: "ul" requires "li" --> <ul> <li>Hope you like it.</li> </head>
2007-05-12, 4704👍, 0💬
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