XML defines the characters available for text as ISO/IEC 10646 (Unicode) supporting UTF-8 and UTF-16.
Character references:
- Allow you to specify an ISO/IEC 10646 character code
- Preceded by:
- &# if specified in decimal
- &#x if specified in hexadecimal
- For example:
- £ is the same as £
- £ is the same as £
- £ also represents £ (this is because the HTML DTD includes it!)