AT&T has an ampersand in their name.

AT&T is another way to write it.

This & that.

4 < 5 and 6 > 5.

Here's an autolink <http://example.com/autolink?a=1&b=2>

Here's an inline [link](/script?a=1&b=2).

Here's a reference [link] [1] with an ampersand in the URL.

[1]: http://example.com/?a=1&b=2