How to implement a programming language in javascript

http://lisperator.net/pltut/

window.matchMedia

https://developer.mozilla.org/en-US/docs/Web/API/Window/matchMedia

web font must be "Installable"

Fonts "Font embeddability" attribute must be set to installable inorder to be used by ie11.

Here is a tool to change that setting:
http://carnage-melon.tom7.org/embed/


Here is the tool for 64-bit windows:
http://zacharykniebel.com/blog/web-development/2013/february/11/css-font-face-in-ie-opentype-embedding-permissions-fix