Miscellaneous

• Retrocomputing and Old Computers
• Marathon Cloudburst in Pasco (with 14 photos)
• My First Microcomputer and Commercial Software
• Mars-Earth Comparisons

• HTML Colors Sorted by Hex Value
• HTML Colors Sorted by Name
• Color Hex - the ColorHexa web site

• CSS Colors Sorted by Hex Value
• CSS Colors Sorted by Name

Résumé

• Normal Version
• Long Version

W3C Recommendations

• HTML 3.2  /  HTML 4.01  /  HTML5
• XHTML 1.0  /  XHTML 1.1 (Module-based)  /  XHTML Basic 1.1 (for small devices)
• XML 1.0  /  XML 1.1
• XPath 1.0  /  XPath 2.0  /  XPath 3.0  /  XPath 3.1
• XSLT 1.0  /  XSLT 2.0
• XSL-FO 1.0  /  XSL-FO 1.1

W3C Validation Services

• W3C Markup Validation Service
  Note: This service can be used for your own markup languages by including your DTD (and, if desired, your SGML declaration) in your uploaded file or pasted text.
• W3C CSS Validation Service
• W3C Link Checker

WDG Validation Services

• HTML Validator
• CSSCheck (mostly CSS1)
• Link Valet, an online link checker

DITA and Other XML-Related Sites

• DITA 1.1 Architectural Specification
• DITA 1.1 Language Specification
• DITA 1.2 Standard (HTML)  /  (PDF)
• DITA XML.org
• OASIS
• The XML Cover Pages