tagdictionary-historyIdTag
The historyId smart tag is available in the tagdictionary palette under the Smart Tags folder.

The historyId smart tag
is included in the point tags rule of the NiagaraTagDictionary. This
rule applies to all objects that are type control:ControlPoint. The value type of this tag is string and its value is set to the historyId of the first enabled history extension on the control:ControlPoint object.