1. Introduction to HED

1.1. Why HED?

1.1.1. Why use HED?

HED (Hierarchical Event Descriptors) is an infrastructure and a controlled vocabulary that allows researchers to annotate their experimental data, especially events, so that tools can use this information.

For more information on Hierarchical Event Descriptors (HED), visit the [HED documentation page](https://hed-examples.readthedocs.io/en/latest/Documentation.html) for a complete list of resources.

1.2. Installing CTagger