emonstrates the chrome.fontSettings API by allowing users to modify the style of displayed fonts on web pages. This extension allows you to customize font settings for different language scripts. For example, you can set the default font for Simplified Chinese content to be different than the font for Japanese content. The settings are per-script (as specified in ISO 15924) rather than per-language. For example, there is a single setting for Cyrillic script rather than separate ones for Russian, Ukrainian, etc.