I see how on Wikipedia's Help desk there's a signature button not only on the talk page but on the base page too, which is very useful to encourage users to sign their requests (nobody bothers typing tildes). I wonder how it's done.
Topic on Help talk:Signatures
Appearance
This post was hidden by 94rain (history)
No, this is controlled by Manual:$wgExtraSignatureNamespaces, by adding NS_PROJECT to the array.