((User:AlexNewArtBot/MaintDisplay|content|displayWikipediaNS)) is used to only display content when transcluded in the Wikipedia and User namespaces. ie. for content used for maintenance tasks that is mixed with content visible to everyone.

Options:

Example:

*Content visible to everyone
((User:AlexNewArtBot/MaintDisplay|*Content visible in Wikipedia and User namespaces))
((User:AlexNewArtBot/MaintDisplay|*Content visible only in User namespace|0))

Results: