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# FOG Documentation Style Guide

FOG's Documentation is written in Markdown.
You can find its source at `toolkit/components/glean/docs`.

## Line breaks

We will use [semantic linefeeds]:
* Break anywhere before 80-100 characters
* Break after any punctuation when it makes sense
* Break before or after any markdown when it makes sense

**Tip:** To keep lines narrow, use markdown's [reference link]
feature whenever it makes sense (or all the time. Up to you.).

## Linking to other documentation

Linking to other external documentation is [easy][reference link].
Linking to other pieces of documentation in the source docs requires a
link to the source file in the sphinx tree.

Links can be relative e.g. to link to the [preferences] docs:

```md
[preferences](preferences.md)
```

Or they can be absolute e.g. to link to the [Telemetry] docs:
```md
[Telemetry](/toolkit/components/telemetry/index.rst)
```

Sphinx will automagically transform that to an
appropriately-base-url'd url with a `.html` suffix.


[semantic linefeeds]: https://rhodesmill.org/brandon/2012/one-sentence-per-line/
[reference link]: https://spec.commonmark.org/0.29/#reference-link
[Telemetry]: /toolkit/components/telemetry/index.rst
[#firefox-source-docs:mozilla.org]: https://chat.mozilla.org/#/room/#firefox-source-docs:mozilla.org
[bug 1621950]: https://bugzilla.mozilla.org/show_bug.cgi?id=1621950