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xml-well-formedness
is constraint for:
- XML document [ thing ]
- XML tags case-sensitivity [ constraint ]
- XML tags are not standardized [ constraint ]
Comment:
tags without children or text must also close
Comment:
there must not be a crossover situation, properly nesting
Comment:
special characters must be used via entities -- predefined ones: &, <, >, ", '
Comment:
every opening tag must have a closing tag -- case-sensitive naming
Comment:
attributes must be quoted
Comment:
a document is well-formed if it does not violate well-formedness rules