Yr iaith ffontiau sydd wedi ei dewis ar hyn o bryd. Gwerthoedd dilys: "ar" (arabig), "x-baltic" (ieithoedd baltig), "x-central-euro" (ieithoedd canol ewrop), "x-cyrillic" (ieithoedd a ysgrifennir â'r wyddor cyrilig), "el" (groeg), "he" (hebraeg), "ja" (siapanëeg), "ko" (corëeg), "zh-C" (tsieinëeg symleiddiedig), "th" (siameg) "zh-TW" (tsieinëeg traddodiadol), "tr" (twrceg), "x-unicode" (ieithoedd eraill), "x-western" (ieithoedd a ysgrifennir yn y sgript lladin), "x-tamil" (tamil) ac "x-devanagari" (devanagari).
The currently selected fonts language. Valid values are "ar" (arabic), "x-baltic" (baltic languages), "x-central-euro" (central european languages), "x-cyrillic" (languages written with cyrillic alphabet), "el" (greek), "he" (hebrew), "ja" (japanese), "ko" (korean), "zh-CN" (simplified chinese), "th" (thai), "zh-TW" (traditional chinese), "tr" (turkish), "x-unicode" (other languages), "x-western" (languages written in latin script), "x-tamil" (tamil) and "x-devanagari" (devanagari).