Board Thread:Support Requests - Designing Your Wiki/@comment-33688175-20200317170752/@comment-9605025-20200319153334

Navboxes are just templates. Are you having trouble with a particular aspect of navboxes?

A template loop is when a template trancludes itself. This can either be direct or indirect via tranclusion of a different template that transcludes the first template either directly or indirectly. For instance, if Template1 trancludes Template2, Template2 transcludes Template3, and Template3 transcludes Template1; then using any of those templates will result in a template loop. If a template is not part of a loop but trancludes a template that is, then that also causes a template loop. For example, if Template4 trancludes Template2 from the precious example, then Template4 would also cause a template loop.

The most common cause of accidental template loops is the lack of noinclude tags.