Shows the bottom level of the main part(1) part that exists in a building object and that determines the position number for the assembly or cast unit and the direction of assembly or cast unit drawings
(1) Main part can be an assembly main part or a cast unit main part.
(2) input part that the user selects first when creating a component
(2) Connections and details always have a component main part.
of an assembly.
Bottom level takes the unit and accuracy from the MarkDimensionFormat.dim file.
You can use this attribute as a user-defined attributeobject property created by the user in order to widen the range of predefined object properties
User-defined attributes are used when the predefined object properties are not sufficient but more properties are needed. For example, comment, locked, and erection status are user-defined attributes.