In the Vinony graph
It is catalogued under topics including Navboxes using background colours and NFL navigational boxes.
Its subject is documented across 42 Wikipedia language editions.
~2 min read
Encyclopedic overview
Template documentation
This template's initial visibility currently defaults to autocollapse, meaning that if there is another collapsible item on the page (a navbox, sidebar, or table with the collapsible attribute), it is hidden apart from its title bar; if not, it is fully visible.
Excerpted from Wikipedia’s “Template:NFL” article, available under the CC BY-SA 4.0 licence.