If you are looking for in the context of CAD software like SolidWorks , it typically refers to operations like extrusions, revolves, or shells used to create 3D models. If you are trying to view the contents of a ZIP file within a CAD environment or send assembly files to others, you might be looking for:

: If the ZIP contains non-native files (like .STEP), SolidWorks has a "Recognize Features" tool to convert them into editable solid features.

: Some PDM (Product Data Management) systems allow you to preview the contents of a ZIP file directly within the file explorer interface to check for solid model components.