data.name

data.name defines the range of attribute values expressed as an XML Name.
Moduletei — 1 The TEI Infrastructure
Declaration
data.name = xsd:Name
Note
Attributes using this datatype must contain a single word which follows the rules defining a legal XML name (see http://www.w3.org/TR/REC-xml/#dt-name): for example they cannot include whitespace or begin with digits.