Text 

used for titles etc.

Simple Type Information

Used By

Attributes area/@alt, coreattrs/@title, img/@alt, map/@title, object/@standby, optgroup/@label, option/@label, style/@title, table/@summary, td/@abbr, th/@abbr

Source 

<xs:simpleType name="Text">
  <xs:annotation>
    <xs:documentation>used for titles etc.</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:string"/>
</xs:simpleType>