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# OSH related file-type meta-data

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    LICENSE.txt)
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Lists file formats by their typical file extension and related meta-data,
separated into categories, one category per CSV ([Comma-separated values](https://en.wikipedia.org/wiki/Comma-separated_values)) file:

* [CAD](file_extension_formats-cad.csv)
  ([Computer Aided Design](https://en.wikipedia.org/wiki/Computer-aided_design))
  * formats suitable to describe 3D mechanical designs
  * [CAD example image](https://upload.wikimedia.org/wikipedia/commons/8/89/Schneckengetriebe.png)
* [PCB](file_extension_formats-pcb.csv)
  ([Printed circuit board](https://en.wikipedia.org/wiki/Printed_circuit_board))
  * formats suitable to describe schematics of electronics and  PCBs
  * [PCB example image](https://upload.wikimedia.org/wikipedia/commons/a/a4/SEG_DVD_430_-_Printed_circuit_board-4276.jpg)
  * [Schematics example image](https://upload.wikimedia.org/wikipedia/commons/7/76/4_bit_counter.svg)

Each file contains these four columns:

| ***Name*** | File extension | File format | Encoding | Category |
| --- | --- | --- | --- | --- |
| ***Valid-Data*** | `"str"` | `open|proprietary|unknown` | `text|binary|both|unknown` | `source|export` |
| ***Example*** | sch | open | text | source |