"doc": "The `font-faces` property can be used to specify what font files to use for rendering text. Font faces contain information needed to render complex texts such as [Devanagari](https://en.wikipedia.org/wiki/Devanagari), [Khmer](https://en.wikipedia.org/wiki/Khmer_script) among many others.<h2>Unicode range</h2>The optional `unicode-range` property can be used to only use a particular font file for characters within the specified unicode range(s). Its value should be an array of strings, each indicating a start and end of a unicode range, similar to the [CSS descriptor with the same name](https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/unicode-range). This allows specifying multiple non-consecutive unicode ranges. When not specified, the default value is `U+0-10FFFF`, meaning the font file will be used for all unicode characters.\n\nRefer to the [Unicode Character Code Charts](https://www.unicode.org/charts/) to see ranges for scripts supported by Unicode. To see what unicode code-points are available in a font, use a tool like [FontDrop](https://fontdrop.info/).\n\n<h2>Font Resolution</h2>For every name in a symbol layer’s [`text-font`](./layers.md/#text-font) array, characters are matched if they are covered one of the by the font files in the corresponding entry of the `font-faces` map. Any still-unmatched characters then fall back to the [`glyphs`](./glyphs.md) URL if provided.\n\n<h2>Supported Fonts</h2>What type of fonts are supported is implementation-defined. Unsupported fonts are ignored.",
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