Ignore the syntax for a moment. Minus Javascript, HTML + CSS is a green screen terminal with better fonts and image support. Message passing (fetch, XMLHttpRequ

Ignore the syntax for a moment. Minus Javascript, HTML + CSS is a green screen terminal with better fonts and image support. Message passing (fetch, XMLHttpRequest, polling, streaming, etc...) is how you build something that feels like a real tool out a system where the sandbox gets in the way of everything you want to hold locally.