fixed [ XML Schema Namespace ]

Used to provide fixed values for both attribute and element instances. When a fixed value is specified for an attribute declaration, then any instance of that attribute that appears in the instance document must have the specified value and if the attribute does not appear, it will be provided by the schema processor with that attribute value. When a fixed value is specifeid for an element declaration, then any occurrence of that element in the instance document must either be empty or have content which matches the value of the fixed attribute, and any empty elements will have the value of the fixed attribute provided as its content by the schema processor.