Currently, index category pages will show article descriptions if they're filled in, which is quite useful to provide users with a brief introduction of what an article contains. However, if the index category page has a nested index category as a subcategory, there is no possibility to add a description and for it to display it in the parent index category.
It would be very useful to have the possibility to add descriptions to nested index categories and that these display in the parent index category like articles do. It would make the parent index category look more consistent and have the option to introduce a subcategory in index form.

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