ML/XHTML/XML
- HTML Cheat sheet
- HTML Character Entities Cheat Sheet
- HTML Cheats with demo
- HTML: Special Characters
- HTML character sets – Microsoft Developers
- HTML Accent Entity Codes
- Special ASCII HTML Character Codes
- XHTML Specifications
- XHTML Character Entity Refrence
- HTML 5 Cheat Sheet
- Fusebox XML cheat sheet (Pdf)
- XML quick refrence (Pdf)