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is often used to describe a text that follows all the syntactic rules as well-formedness rules in the XML specification: strictly speaking the phrase is tautological, since a text that does not follow these rules is not an XML document. The rules for well-formed XML documents go beyond the general
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is one that is either a) opened and subsequently closed, or b) an empty element, which in that case must be terminated; and in either case which is properly
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requirements for the markup languages mentioned above. The additional rules include, for example, a rule to quote attribute values,
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of tag names, rules about the characters that can appear in names and elsewhere, the syntax of comments,
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etc. In HTML 4.01 and earlier, no slash is added to terminate the element.
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For example, the code below is not well-formed HTML, because the
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Markup language element which is correctly nested and tagged
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53:. Unsourced material may be challenged and
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117:Learn how and when to remove this message
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51:adding citations to reliable sources
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375:. You can help Knowledge (XXG) by
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215:all elements are well-formed, and
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347:Document Type Definition
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157:so that it does not
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107:December 2009
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62:Find sources:
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416:Categories
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137:such as
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