diff --git a/_Sidebar.md b/_Sidebar.md
index a4c36d7..f095b8d 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -1,4 +1,6 @@
 ### Input / Output
 - [Console IO](https://gitea.eventhorizonstudio.io/EventHorizonStudio/EHS/wiki/Console-IO)
 - [File IO](https://gitea.eventhorizonstudio.io/EventHorizonStudio/EHS/wiki/File-IO)
+
+### System
 - [Multi-Threading](https://gitea.eventhorizonstudio.io/EventHorizonStudio/EHS/wiki/Multi-Threading.-)
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