This is an HTML document format named docuK which is rendered by JavaScript, jQuery, MathJax, and google code prettifier. Specific features are changable mode/font, resizable font-size/line-height, table of contents, auto numbering of sections/figures/equations, auto citing references, auto refering figures and equations, auto refering anything with id, delayed(lazy)-loading equations (MathJax) and figures (images, iframes), and auto code printing. Quite similar to LaTeX or Wiki document, but extended a little bit.