The Pain of Ampersand in HTML

Tip: whenever you want to write the ampersand symbol in HTML/XML, don't use &, use FULLWIDTH AMPERSAND ＆ instead. For example:

Here is how your browser renders it: AT&T vs AT＆T

You can set up in emacs to easily type it, or setup a key layout in any of {Windows, Mac, Linux}. See: Create TeX / APL Keyboard Layout

See also: Semantic of Symbols: HTML Entities, Ampersand, Unicode