# E57

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/E57
> Markdown URL: https://mediated.wiki/source/E57.md
> Source: https://en.wikipedia.org/wiki/E57
> Source revision: 1291692534
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

**E57** may refer to:

- [European route E57](/source/European_route_E57)
- [Nimzo-Indian Defense](/source/Nimzo-Indian_Defense), Encyclopaedia of Chess Openings code
- A file format (and its [filename extension](/source/List_of_filename_extensions_(A%E2%80%93E)#E)) developed by ASTM International for storing point clouds and images
- A German air-raid [siren](/source/Siren_(alarm))

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Adapted from the Wikipedia article [E57](https://en.wikipedia.org/wiki/E57) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/E57?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.