GRS500 CADView Standard and Professional Two versions of GRS500 CADView are available, the functionality of both versions is identical: GRS500 CADView Standard — is dedicated to a single CAD input of your choice. GRS500 CADView Professional — includes all available input processors plus any new processors released during your first year of ownership Both standard and professional editions also include a free of charge Gerber input. Paperless repair Imagine a facility to selectively X-ray a faulty net. Even more important is the ability to use the GRS PCB repair facility to highlight faulty nets on screen — even when they disappear into an internal layer. **Gerber data is photo-plotting information and contains limited data for repair purposes. Polar recommends you choose to use CAD data wherever possible.