We intend to further improve the Font Test for web fonts.
Currently the WOFF Test page allows you to set a language through the value of the “lang” attribute, but it might also be nice to support the “font-language-override” property, as it expects an OpenType language system tag, which is exactly how it is defined in the OpenType layout features in your fonts.
<div id="preview" lang="en"></div>
font-language-override: "SRB";
It would be great if a web designer is able to help us improve the WOFF Test page. Let us know if you are willing to help.