The InternalDefinition type exposes the following members.
Properties
| Name | Description | |
|---|---|---|
 | BuiltInParameter | Tests whether this definition identifies a built-in parameter or not. |
| Id | The id of the parameter. |
| IsValidObject | Specifies whether the .NET object represents a valid Revit entity. |
| Name | The user-visible name for the parameter. (Overrides DefinitionName.) |
| ParameterGroup | Obsolete. Id of a built-in parameter group to which the parameter defined by this definition belongs. (Overrides DefinitionParameterGroup.) |
| VariesAcrossGroups | Whether or not the parameter values can vary across group members. |
| Visible | Indicates if the parameter is visible in the Autodesk Revit user interface. |