Under a Part node or Local Part node you define and create a geometry sequence with geometric primitives and features as subnodes. The Settings window for a Part node is identical to the Settings window for a corresponding Geometry node of the same dimension, except that there is an Input Parameters section and no Automatic rebuild check box (see The Geometry Node). There is also a special setting for part variants in the Advanced section (see below).

Enter the names of the input parameters (arguments) in the Name column. In the Default expression column, enter their default values as expressions in terms of global parameters and numerical values. The corresponding values appear in the Value column. Optionally, enter descriptions for the input parameters in the Description column. Use the Move Up (), Move Down (), and Delete () buttons to organize the list. Click the Save to File button () and the Load from File button () to save and load parameters to and from a text file. Click the Insert Expression button () or press Ctrl+Space to insert an available or applicable expression such as a global parameter.

Select the Show as variant in part library check box to create a part variant; that is, the part is one of two or more variants of the same geometry part. You can use this functionality to make it possible to choose variants of a part instead of different separate geometry parts. Parts in the same MPH-file that are not variants are not visible for users of the part library. It can be a part that creates the basic part for which the part variants provide transformation of the input parameters, for example. When you add a part from an MPH-file that includes variants, a Select Part Variant window appears, where you can choose the variant that you want to use.