Overview
========

This section explains how to handle eye tracker data from various sources as live streams or archived files before to passing them to a processing pipeline. Those various usages are covered by the notion of **eye tracking context**.

To use a ready-made eye tracking context, you only need to know:

* [How to edit and execute a context](configuration_and_execution.md)

More advanced features are also explained like:

* [How to script context](./advanced_topics/scripting.md),
* [How to define a context](./advanced_topics/context_definition.md)

To get deeper in how context works, the schema below mentions *enter* and *exit* methods which are related to the notion of [Python context manager](https://docs.python.org/3/reference/datamodel.html#context-managers).

![ArContext class](../../../img/eye_tracker_context.png)