The part need not be in a solid state to perform solid modeling as long as the feature being applied doesn't intersect one of the part's open edges. This capability comes in handy when you work with imported geometry. These hybrid modelers can automatically sew imported geometry into solids. When stitching falls short, hybrid modelers can do more with the available geometry. Generally, if a solids-only system cannot sew an imported model back into a solid, what you can do with the geometry within the system is severely limited.
Components can be wire frame objects, open surface set models, or solids.
The assembly functionality treats all geometric forms equally. Hybrid modelers build assemblies in exactly the same way as their solids-only counterparts. The only difference is that you are not limited to solids. As is the case with assemblies, hybrid modelers can create detailed layouts of 3D models in a similar manner as their solids-only counterparts. You select parts or assemblies, then extract views, sections, and details and place them on a drawing sheet.