The list of font families, or a reference to a TokenFontFamilies.
The font size, as a positive number, or a reference to a TokenFontSizes.
The font weight, as a weight string ("bold", "strong", etc.), or a reference to a TokenFontWeights.
The line height, as a number. Note that there not exists an individual token type line height, only part of a Typography token. If you need to put here a reference, use a NumberToken.
The text case as a string ("none", "uppercase", "lowercase" "capitalize"), or a reference to a TokenTextCase.
The text decoration as a string ("none", "underline", "strike-through"), or a reference to a TokenTextDecoration.
The letter spacing, as a number, or a reference to a TokenLetterSpacing.