// Test code highlighting. --- #set page(width: 180pt) #set text(6pt) #show raw: it => rect( width: 100%, inset: (x: 4pt, y: 5pt), radius: 4pt, fill: rgb(239, 241, 243), place(right, text(luma(110), it.lang)) + it, ) ```typ = Chapter 1 #lorem(100) #let hi = "Hello World" #show heading: emph ``` ```rust /// A carefully designed state machine. #[derive(Debug)] enum State<'a> { A(u8), B(&'a str) } fn advance(state: State<'_>) -> State<'_> { unimplemented!("state machine") } ``` ```py import this def hi(): print("Hi!") ``` ```cpp #include int main() { std::cout << "Hello, world!"; } ``` ```julia # Add two numbers function add(x, y) return x * y end ``` // Try with some indent. ```html

Topic

The Hypertext Markup Language.

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