TEI data teidata.xTruthValue (extended truth value)

teidata.xTruthValue (extended truth value) defines the range of attribute values used to express a truth value which may be unknown.
Module	tei
Used by	Element: binding/@contemporary said/@aloud said/@direct seal/@contemporary
Content model	<content> <alternate> <dataRef name="boolean"/> <valList> <valItem ident="unknown"/> <valItem ident="inapplicable"/> </valList> </alternate> </content>
Declaration	tei_teidata.xTruthValue = xsd:boolean \| ( "unknown" \| "inapplicable" )
Note	In cases where where uncertainty is inappropriate, use the datatype teidata.TruthValue.