VariableName.datatype 

Variable name which are modeled on NMTOKENS
except that "$" is permitted. Additional constraints: must 
follow ECMAScript variable naming conventions; not include ECMAScript 
reserve words

Simple Type Information

Used By

Attributes eventprocessor/@statevariable, var/@name

Source 

<xsd:simpleType name="VariableName.datatype">
  <xsd:annotation>
    <xsd:documentation>Variable name which are modeled on NMTOKENS except that "$" is permitted. Additional constraints: must follow ECMAScript variable naming conventions; not include ECMAScript reserve words</xsd:documentation>
  </xsd:annotation>
  <xsd:restriction base="xsd:token">
    <xsd:pattern value="[$\c]+"/>
  </xsd:restriction>
</xsd:simpleType>