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+---
+title: "List of categories"
+date: 2021-02-22
+layout: "default"
+---
+
+# List of categories
+
+{% assign by_letter = site.pages
+  | where_exp: "item", "item.layout == 'category'"
+  | group_by_exp: "item", "item.title | truncate: 1, ''"
+  | sort: "name"
+%}
+
+This is an alphabetical list of the categories 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 %}