<textLang>describes the languages and writing systems used by a manuscript (as opposed to its description, which is described in the <langUsage> element)
Attributes:
langKeysupplies a pre-defined identifier for the chief language used in the manuscript.
Datatype: IDREF
Values: a code identifying a <language> element in the header
Default: #IMPLIED
otherLangsone or more codes identifying any other languages used in the manuscript.
Datatype: IDREFS
Values: a list of SGML identifiers, each of which identifies a <language> element in the header
Default: #IMPLIED
Example
<textLang langKey="ENG" otherlangs="LAT">
Predominantly in English with Latin glosses</textLang>
Declaration
<!ELEMENT textLang (%phrase.seq)>

See further2.4.1. Languages and scripts

Appendix A Reference Documentation for Elements and Classes