---
title: {Rule Title}
impact: {CRITICAL|HIGH|MEDIUM|LOW}
impactDescription: {Quantified impact or consequence}
tags: {section-prefix}, {technique}, {related-concepts}
---

## {Rule Title}

{1-3 sentences explaining WHY this matters for the agent-uml canvas.}

**Incorrect ({what's wrong}):**

```plantuml
{Bad PlantUML code — production-realistic, not strawman}
{' Comments explaining the cost}
```

**Correct ({what's right}):**

```plantuml
{Good PlantUML code — minimal diff from incorrect}
{' Comments explaining the benefit}
```

**When NOT to use this pattern:**
- {Exception 1}
- {Exception 2}
