HTML type
ton.html is a string-like type meant for markup: it prints and concatenates like a string, but +-concatenating it with anything else keeps the result ton.html, and a route handler (see Local server) returning ton.html gets served with Content-Type: text/html instead of text/plain.
ton.html page = "<h1>Hello</h1>"
ton.string name = "kuro"
ton.html greeting = page + "<p>Hi " + name + "</p>"A plain string literal assigned directly to a ton.html variable is coerced automatically — you rarely need to think about the distinction until you're returning something from a route handler.