*not emphasized* \emphasis **not bold** <br/> not a tag [link](/foo) not a link link `not code`
1. not a list item
* not a list.
# Not a header
[foo]: /url "not a reference"
$ ^ ; can be escaped. \a \b \T cannot. unicode letters and symbols cannot: \π \‥.
0 HTTP/1.0 500 Internal Server Error Date: Mon, 18 May 2026 23:43:37 GMT Server: OpenBSD httpd Connection: close Content-Type: text/html Content-Length: 518