Relation Definition (RelationInfo)
Tag dictionaries often contain a collection of relation definitions, which are standardized relation Ids with semantic meaning
for that namespace. These relation definitions come into play when adding a relation to a component. In the Relation dialog, your choices are limited to the relations that are defined in any of the tag dictionaries installed on your system.
Figure 28. Relation Definitions in custom TagDictionary (left) provide choices seen in the Relation dialog (right)
NOTE: For devices containing child points that have a Null Proxy extension, the childNullProxyPoint relation is implied on each of those points.