---
type: "rule"
title: "R-UNRES-9"
description: "Binary rule: if any cluster can be defended — even weakly — use '#X [conf=low]', not '?'."
resource: "tlctc:rule:R-UNRES-9"
tags:
  - "taxonomy"
  - "rule"
  - "must"
enforcement_level: "must"
machine_enforceable: false
---
# R-UNRES-9

Binary rule: if any cluster can be defended — even weakly — use '#X [conf=low]', not '?'. Reserve '?'/'…' for genuine 'we know something happened, we don't know what' situations.

# Schema

- **Enforcement level:** must
- **Machine enforceable:** false