I have a manual. It's A5 to be printed in A4 (so to cut in the middle the A4 page).

I'd like to have a cue like a marking to be able to cut exactly in the middle.

\setuplayout[marking=on] does not print anything useful for the case.

 

I've thought about \showframe[text=off, margin=off] but it creates a green border all around.

Ideas?

Many thanks

-a-