A stub is an incomplete article that the original author thinks does not meet a minimum of useful information.

You can find the stubs in the stub category.

You can mark a page as a stub with the generic template {{stub}}, which produced the following text:
Logo This alternate history related article is a stub. You can help by expanding it.

Or you can create a template of your own, using a pre-existing stub template such as Template:stub, Template:BLstub or Template:Ddstub as a model if desired.