---
title: "List of concepts"
date: 2021-02-22
layout: "default"
---

# List of concepts

{% assign by_letter = site.pages
  | where_exp: "item", "item.layout == 'concept'"
  | group_by_exp: "item", "item.title | truncate: 1, ''"
  | sort: "name"
%}

This is an alphabetical list of the concepts in this knowledge base.

<div style="text-align: center;">
&hyphen; 
{% for letter in by_letter %}
<a href="#{{ letter.name }}">{{ letter.name }}</a>
&hyphen; 
{% endfor %}
</div>

{% for letter in by_letter %}
<h2 id="{{ letter.name }}">{{ letter.name }}</h2>
<ul>
  {% assign items = letter.items | sort: "title" %}
  {% for item in items %}
  <li><a href="{{ item.url }}">{{ item.title }}</a></li>
  {% endfor %}
</ul>
{% endfor %}