diff --git a/docs/codesys/plc-algorithm-design.md b/docs/codesys/plc-algorithm-design.md
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@@ -1,6 +1,6 @@
 # PLC Algorithm Design - Lighting and Water Boiler Control
 
-## Overview
+## Overviewp
 
 This document defines the PLC algorithms for the home automation system:
 1. **Lighting Control** - Improved logic with command-based control for Home Assistant and toggle-based for Zigbee switches