Post #2318547

@snaprails@cupoftea.social I'm not convinced by that, because the term is way older than jack-in selectors The most convincing explanation I've head was that it's related to the shape of the diagram symbol - and early diagrams I have do look more like ___U___ than the more modern ___V___ However even that doesn't come from any source I'd treat as authoritative! I think the original derivation is probably lost to time! A bit like those false etymologies for 81s being "A.T.1s" etc