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- Gerber Viewer (gerbv) is a viewer for Gerber files. Gerber files are
- generated from PCB CAD system and sent to PCB manufacturers as basis for
- the manufacturing process. The standard supported by gerbv is RS-274X.
- The basic difference between RS-274D (the old standard) and RS-274X is
- basically the addition of apertures in RS-274X. It might be possible to
- make an RS-274X file out of an RS-274D file and an aperture list.
- gerbv also supports drill files. The format supported are known under
- names as NC-drill or Excellon. The format is a bit undefined and
- different EDA-vendors implement it different. But basically you need to
- have the tools definition in the file, then the parser is quite
- tolerant. The different holes are shown as dots in the (scaled) correct
- size.
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