# Supported text artifacts

This index is generated from the same typed registry that controls scanning and cleanup behavior.

Canonical: https://watermarkslayer.com/supported-artifacts
Markdown alternate: https://watermarkslayer.com/supported-artifacts.md
Last reviewed: 2026-08-12

## Registry entries

### [zero-width space](/supported-artifacts/zero-width-space)

- Code point or framing: U+200B
- Launch support: supported
- Launch action: remove
- Last fixture test: 2026-08-12

### [byte-order mark](/supported-artifacts/byte-order-mark)

- Code point or framing: U+FEFF
- Launch support: supported
- Launch action: remove
- Last fixture test: 2026-08-12

### [zero-width non-joiner](/supported-artifacts/zero-width-non-joiner)

- Code point or framing: U+200C
- Launch support: report-only
- Launch action: report
- Last fixture test: 2026-08-12

### [zero-width joiner](/supported-artifacts/zero-width-joiner)

- Code point or framing: U+200D
- Launch support: report-only
- Launch action: report
- Last fixture test: 2026-08-12

### [bidirectional control](/supported-artifacts/bidirectional-controls)

- Code point or framing: U+061C, U+200E, U+200F, U+202A-U+202E, U+2066-U+2069
- Launch support: report-only
- Launch action: report
- Last fixture test: 2026-08-12

### [word joiner](/supported-artifacts/word-joiner)

- Code point or framing: U+2060
- Launch support: report-only
- Launch action: report
- Last fixture test: 2026-08-12

### [variation selector block](/supported-artifacts/variation-selectors)

- Code point or framing: U+FE00-U+FE0F, U+E0100-U+E01EF
- Launch support: report-only
- Launch action: report
- Last fixture test: 2026-08-12

### [C2PA text wrapper](/supported-artifacts/c2pa-text-wrapper)

- Code point or framing: C2PATXT\0 version and big-endian payload length
- Launch support: report-only
- Launch action: report
- Last fixture test: 2026-08-12

### [credential-like selector block](/supported-artifacts/credential-like-selector-block)

- Code point or framing: U+FE00-U+FE0F, U+E0100-U+E01EF
- Launch support: report-only
- Launch action: report
- Last fixture test: 2026-08-12

### [unknown format control](/supported-artifacts/unknown-format-control)

- Code point or framing: Other Unicode Cf code points
- Launch support: unsupported
- Launch action: unsupported
- Last fixture test: 2026-08-12

## How to read the registry

Supported means a bounded fixture-proven action exists. Report-only means inspection can identify the observation but launch code does not alter it. Unsupported means there is no registered transform.

## Evidence

- [Unicode 17.0 Core Specification, Chapter 5](https://unicode.org/versions/Unicode17.0.0/core-spec/chapter-5/)
- [Unicode 17.0 Core Specification, Chapter 23](https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-23/)
- [C2PA Content Credentials 2.4 specification](https://spec.c2pa.org/specifications/specifications/2.4/specs/ContentCredentials.html)