{% include build_email_list_category.md section="Modelica Association" category="association" %} {% include build_email_list_category.md section="Related projects" category="project" %} {% include build_email_list_category.md section="Conferences and user meetings" category="conference" %} {% include build_email_list_category.md section="Vendor news" category="vendor" %} {% include build_email_list_category.md section="News from libraries" category="library" %} {% include build_email_list_category.md section="Education news" category="education" %}
{% assign cats = "association,project,vendor,library,conference,education" %}
{% for page in site.[name] %} {% if page.index != true and hidden != true and page.category != "letter" %} {% unless cats contains page.category %}
- ERROR: [The page {{ page.title }}](https://github.com/modelica/newsletter/blob/master/{{ page.path }}) uncategorized! {{ page.category }} unknown. {% endunless %} {% endif %} {% endfor %}