The data element attributes group includes attributes that are defined for the
<data> element, and are reused on most or all specializations of the
<data> element.
@name
Defines
a unique name for the object.
@datatype
Describes
the type of data contained in the @value attribute or within the
<data> element. A typical use of @datatype will
be the identifying URI for an XML Schema datatype.
@value
Specifies
a value associated with the current property or element.