# Core Concepts 

This documentation cover more over-arching concepts of Evennia, often involving many [Core Components](../Components/Components-Overview.md) acting together.

## General concepts

- [Asynchronous processing](./Async-Process.md)
- [On Soft-Code](./Soft-Code.md)
- [Using MUX as standard for default commands](./Using-MUX-as-a-Standard.md)

## Access 

- [Multisession modes](./Multisession-modes.md)
- [Permissions](./Building-Permissions.md)
- [Banning](./Banning.md)

## Extending the Server 
- [Custom Protocols](./Custom-Protocols.md)
- [Bootstrap](./Bootstrap-&-Evennia.md)
- [Creating new models](./New-Models.md)

## Text processing

- [Change the language of the server](./Internationalization.md)
- [Server text-encoding](./Text-Encodings.md)
- [Text tags](./TextTags.md)
- [Change Messages Per receiver](./Change-Messages-Per-Receiver.md)

## Web features

- [Web features](./Web-Features.md)