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Support absolute TeX units (#732)

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* Support absolute TeX units

* Implement @kohler's comments

* Rewrite unit documentation according to @kohler's comments
This commit is contained in:
Erik Demaine
2017-08-12 07:30:06 +09:00
committed by Kevin Barabash
parent dcdca732a3
commit a0bedcce8e
9 changed files with 149 additions and 47 deletions
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README.md
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@@ -66,6 +66,25 @@ katex.render("c = \\pm\\sqrt{a^2 + b^2}\\in\\RR", element, {
Math on the page can be automatically rendered using the auto-render extension. See [the Auto-render README](contrib/auto-render/README.md) for more information.
#### Font size and lengths
By default, KaTeX math is rendered in a 1.21× larger font than the surrounding
context, which makes super- and subscripts easier to read. You can control
this using CSS, for example:
```css
.katex { font-size: 1.1em; }
```
KaTeX supports all TeX units, including absolute units like `cm` and `in`.
Absolute units are currently scaled relative to the default TeX font size of
10pt, so that `\kern1cm` produces the same results as `\kern2.845275em`.
As a result, relative and absolute units are both uniformly scaled relative
to LaTeX with a 10pt font; for example, the rectangle `\rule{1cm}{1em}` has
the same aspect ratio in KaTeX as in LaTeX. However, because most browsers
default to a larger font size, this typically means that a 1cm kern in KaTeX
will appear larger than 1cm in browser units.
## Contributing
See [CONTRIBUTING.md](CONTRIBUTING.md)