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DTD - element type definition / 1
Describes allowed content of the element, in form of
<!ELEMENT element-name ... >, where
... can be
-
EMPTY- for empty element which may be represented as<element/>or<element></element>- the same logical meaning -
ANY- any element content allowed, i.e. text nodes, child elements, ... -
may contain child elements -
<!ELEMENT element-name (specification of child elements)> -
may be mixed - containing both text and child elements given by enumeration
<!ELEMENT element-name (#PCDATA | specification of child elements)*>. -
for MIXED: the order or cardinality of concrete child elements cannot be specified.
-
The star (*) is required - any cardinality is always allowed.