Text consists of character data and markup. XML defines the text between the start and end
tags to be "character data" and the text within the tags to be
"markup". Data is typically
"character data" (letters, numbers, punctuation... anything within the
boundaries of valid Unicode) but it can also be binary data. Markup includes tags, comments,
processing instructions, DTDs, references, etc.
Markup takes the form of:
start tags
end tags
empty element tags
entity references
character references
comments
CDATA section delimiters
Character Data
All text of a document that is not markup
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