The Non-diffusing parent category template adds a message box to inform readers of categories that are non-diffusing, such that pages within its subcategories also appear in the parent category.
The current implementation of this template assumes the parent category is non-diffusing over all of its subcategories.
Usage
This template should be placed at the top of a category, after hatnotes if any.
Simply add
{{Non-diffusing parent category}}
to get
This is a non-diffusing parent category.
The contents of all subcategories below can also be found within this category.
