About GDL Object Subtypes

Note: IFC stands for Industry Foundation Classes. To read more about IFC, see Working with IFC, or download the IFC 2×3 Guide from
Go to File > Libraries and Objects > Open Object. Browse for the object library in which the object is located. From the Files of Type drop-down list, choose the subtype of the objects you wish to browse.
In the Object Settings dialog box, select Subtype View to browse by object subtype.
To change the subtype of a placed object, select it, open it (File > Libraries and Objects > Open Object) and click the Select Subtype button at the top of the dialog box.
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