display_hed_prerelease.html

---
layout: display_hed_layout
title: HED Prerelease Schema Browser
description: HED (Hierarchical Event Descriptor) is a structured vocabulary for annotating events.<br>HED and the HED schema have evolved over several generations; the current generation (HED-3G) HED base schema, begins with version 8.0.0.<br>For more information, see <a href="https://www.hedtags.org">hedtags.org</a>.
schema_name: standard_prerelease
---