<!-- defines definitions which can be refered to the id attribute in user defined fields -->
<!-- Up to now these are readonly values, hence you can read but not update them -->
<!-- Attribut Id: contains il_ prefix with id, content equals attribute id in UserDefinedField tag -->
<!-- Attribut UDFName: contains il_ prefix with id, content equals attribute name in UserDefinedField tag -->
<!-- Tag UDFValue: only together with type "SELECT", possible field values, at least one should match UserDefinedField tag content-->
<!ELEMENT UDFDefinitions (UDFDefinition*)>
<!ELEMENT UDFDefinition (UDFName, UDFValue*)>
<!ATTLIST UDFDefinition
	Id CDATA #REQUIRED
	Type       (TEXT|SELECT) #REQUIRED
	Visible    (TRUE|FALSE) #REQUIRED
	Changeable (TRUE|FALSE) #REQUIRED
	Required   (TRUE|FALSE)  #REQUIRED
	Searchable (TRUE|FALSE)  #REQUIRED
	CourseExport (TRUE|FALSE) #REQUIRED
	Export (TRUE|FALSE) #REQUIRED
>
<!ELEMENT UDFName (#PCDATA)>
<!ELEMENT UDFValue (#PCDATA)>