# Core Concepts This documentation cover more over-arching concepts of Evennia, often involving many [Core Components](../Components/Components-Overview.md) acting together. ## General concepts ```{toctree} :maxdepth: 2 Messagepath.md OOB.md Async-Process.md ``` ## Text processing ```{toctree} :maxdepth: 2 Tags-Parsed-By-Evennia.md Change-Message-Per-Receiver.md Internationalization.md Text-Encodings.md ``` ## Access ```{toctree} :maxdepth: 2 Connection-Styles.md Guests.md Banning.md ``` ## Extending the Server ```{toctree} :maxdepth: 2 Protocols.md Models.md Zones.md ```