# 0. How to read this document › 0.1 Evidence labels (1)

Checks 1 to 4 of 4, each with its evidence

## What you can do here

- **Verify 1: OBSERVED | Read directly from a primary sou…**: Verify: OBSERVED | Read directly from a primary source: an official specifica…
- **Verify 2: CLAIM | Stated by a vendor, a project's mar…**: Verify: CLAIM | Stated by a vendor, a project's marketing, or a secondary com…
- **Verify 3: UNKNOWN | We searched and could not confirm…**: Verify: UNKNOWN | We searched and could not confirm. The line says what we se…
- **Verify 4: AGREEMENT (status) | A standard or specific…**: Verify: AGREEMENT (status) | A standard or specification. Status is one of: p…
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- **Open Meet the research: 0.1 Evidence labels: **