Unicode Annexes and Technical Standards

1. UAX #15 Unicode Normalization Forms

   NFC, NFD, NFKC and NFKD and canonical equivalence.

2. UAX #29 Text Segmentation

   Grapheme cluster, word and sentence boundaries.

3. UAX #9 Bidirectional Algorithm

   Reordering mixed left-to-right and right-to-left text.

4. UAX #31 Identifiers and Syntax

   XID_Start/XID_Continue and identifier syntax for programming languages.

5. UTS #10 Collation Algorithm

   Locale-aware sorting with the Unicode Collation Algorithm.

6. UTS #18 Regular Expressions

   Unicode properties and semantics in regular expressions.

7. UTS #39 Security Mechanisms

   Confusables, restriction levels and spoofing detection.

8. UTS #46 IDNA Compatibility Processing

   Processing internationalized domain names.

9. UTS #51 Emoji

   Emoji sequences, ZWJ and presentation.

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
• UTF-8 (RFC 3629)
• UUIDs (RFC 9562)
• XML 1.0 and Namespaces
• YAML 1.2.2