Module:Is infobox in lead/doc

Module:Is infobox in lead checks if a given infobox is in the lead, is also the only infobox in the lead, and that there aren't two of that same infobox in the article. If that is the case, it returns true, and if not returns nothing.

Usage

{{#invoke:Is infobox in lead|main|[Ii]nfobox [Ff]oo [Bb]ar}}