Add a name, description, help file, and image to define the subassembly.
| Subassembly Name | Specifies a subassembly name to display in the AutoCAD Civil 3D Tool Palette. Note: The subassembly name must not include spaces.
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| Description | Specifies a description of the subassembly. |
| Help File | Specifies the help file to include with the subassembly. The help file should describe the input, output, and target parameters, as well as the codes that are assigned to the subassembly. Example: subassembly_name.chm |
| Image | Specifies a subassembly image to display in the AutoCAD Civil 3D Tool Palette. |