the HTML Turing Machine Language (HTML) is a programming language and IDE embedded in HTML.

This is the reference implementation of HTML.

• The output of every HTML program is HTML.
• A div is an HTML function definition.
• A link is an HTML function call. You may navigate to a function's definition by clicking a function call.
• A special link called eval will bring you forward one step in the computation.
• To step forwards and backwards in the computation, hit your Forward or Back button.
• You will be redirected to the current page if you eval HTML with erroneous syntax.