AutoPLANT Structural Modeler is primarily intended for adding structural elements and shapes into 3D Piping and Equipment drawings.
To extend the feature set, you should purchase AutoPLANT Structural Engineering, which includes an extended set of parametric joint connections; the ability to generate engineering drawings; and includes 2D, frame, and stick line drawing (among other features).
Finally, the ultimate expansion tool is AutoPLANT Structural Detailer, which includes all the capabilities of Structural Modeler and Structural Engineering, along with the ability to do individual piece part detailing, and the capability of output files to NC (Numerically Controlled) and ERP (Enterprise Resource Planning) systems.