This category contains templates which are designed solely for use with DynamicPageList. They generally should not be directly used as a normal template, and often their WhatLinksHere page will show no transclusions. Please do not delete these templates without making sure that related DPL queries are fixed.
It is specifically templates which are used within DPL calls (and only DPL calls). DPL calls are listed by Special:WhatLinksHere/Template:Extension DPL.