Top level category ofin German.
Use a categorizing tag for template itself in the region between <noinclude> and </noinclude>. If you add it out of the region, pages using the template categorized under this category. Those page must be categorized by categories for contents.
This category has the following 6 subcategories, out of 6 total.
Pages in category "DE:Templates"
The following 64 pages are in this category, out of 64 total.