docs: add section on when to apply typescale roles

PiperOrigin-RevId: 619985886
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Elizabeth Mitchell 2024-03-28 10:37:42 -07:00 committed by Copybara-Service
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commit b46361ea74

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@ -10,7 +10,7 @@ order: 3
<!--*
# Document freshness: For more information, see go/fresh-source.
freshness: { owner: 'lizmitchell' reviewed: '2024-03-05' }
freshness: { owner: 'lizmitchell' reviewed: '2024-03-28' }
tag: 'docType:howTo'
*-->
@ -69,7 +69,11 @@ Plain | `--md-ref-typeface-plain`
A
[typescale](https://m3.material.io/styles/typography/type-scale-tokens)<!-- {.external} -->
is a collection of font styles: `font-family`, `font-size`, `line-height`, and
`font-weight`.
`font-weight`. They are organized into roles that describe their purpose.
Material's
[applying type guidelines](https://m3.material.io/styles/typography/applying-type)<!-- {.external} -->
explains when to use each typescale role.
### Classes