XML 1.0 and Namespaces

1. Documents and well-formedness

   Well-formed documents and the document production.

2. Logical structures

   Elements, start/end tags, attributes and content.

3. Character data and CDATA sections

   Character data, escaping and CDATA.

4. Comments and processing instructions

   Comment and PI syntax.

5. Prolog and document type declaration

   XML declaration, DOCTYPE and DTD basics.

6. Physical structures: entities

   Entity declarations, references and predefined entities.

7. White space handling

   xml:space and whitespace in content.

8. Language identification

   xml:lang attribute.

9. Namespaces in XML

   Declaring namespaces, QNames and scoping rules.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.

• MessagePack Specification
• OpenAPI Specification
• Problem Details for HTTP APIs (RFC 9457)
• REST (Fielding dissertation)
• Semantic Versioning 2.0.0
• Standard Webhooks
• The Unicode Standard
• TOML v1.0.0
• Unicode Annexes and Technical Standards
• UTF-8 (RFC 3629)
• UUIDs (RFC 9562)
• YAML 1.2.2