On 12/3/2017 8:47 AM, Pablo Rodriguez wrote:
On 11/29/2017 09:53 PM, luigi scarso wrote:
I think it can easily  done with a layer,
but the scope of the crop marks is to make a "clean" cut;
adding more marks as in your example  means that the final sheets
can still have a "dirty" remain of inks of the marks.

Hi Luigi,

there are some cases (when you don’t want a middle location), in which
you need marks inside).

inside of what you cut off? so you see a line there? if so, then it's part of the page content and should be done with overlays (otherwise we add features that are hard to explain and seldom used and forgotten)

The marks as in ConTeXt are ok,  the trick is don't cut too much --- see
https://www.youtube.com/watch?v=rnOyOI7sjsg

I don’t mean that the marks are wrong.

But it is impossible to have a left or right location and cut the paper
with a trimmer (https://en.wikipedia.org/wiki/Paper_cutter).

This is why a crossed marking makes sense.
the only thing that helps against the marke being cut off is to draw a frame so i'll add

\setuplayout[marking=page]

which draws a dashed outline just outside the page (so one can cut there and still get the right size)

Hans


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