This is a post by Beth Stackpole on PTC site.

Every year and with each new release, CAD programs are stuffed with yet another round of feature sets intended to radically alter how engineers design and build products.

Many of those capabilities have certainly been transformative—consider the melding of direct modeling and parametric capabilities in most modern day CAD tools, for example, or the streamlined user interfaces that make tools more readily accessible to a broad swath of engineers.

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