User manuals & documentation
Once a product has been designed and full 3D CAD data exists, significant time and cost savings can be made with its efficient use for documentation, illustrations and user manuals. Solidworks Composer is used as the CAD data remains intact with the Composer data parametrically linked. This takes a lot of work out of changes.
Here are a few pages from a user manual that was intended to be monochrome for low cost printing but full colour could have been used.