TagVariables is an instance of AliasNameCategoryType. TagVariables shall restrict instances of AliasNameType to those that have an AliasFor References that point to Variables. The TagVariables instance is formally defined in Table 10.

Table 10 – TagVariables definition

Attribute	Value
BrowseName	TagVariables
References	NodeClass	BrowseName	DataType	TypeDefinition
OrganizedBy by the Aliases defined in 9.2
HasTypeDefinition	ObjectType	AliasNameCategoryType	Defined in 6.3
ConformanceUnits
AliasName Category Tags

This is the root folder for AliasNameType instances that contain an AliasFor reference to Variables. It can contain additional AliasNameCategoryType Objects, which could be used to create a hierarchy. A single instance of AliasNameType can exist in more than one location in the Alias hierarchy.