content: As a mechanical engineer, I've used all kinds of CAD programs as well as other types of software. This has to be one of the worst software packages I've ever used. The interface is maddeningly archaic. It makes one wonder about the caliber of programmer that Broderbund is hiring. It also makes one wonder who's writing these reviews, some hardly seems believable after actually experiencing the software.PLEASE, do yourself a favor, don't believe the positive reviews, and save your money. Given a technical background, I lulled myself into believing I should be able to handle it in spite of the negative reviews, and came away severely disappointed.Stick to a general 2D drawing program such as AutoCad, Vellum, or Visio, it'll be much less headache and still fulfill 99% of what most users are looking for.