[NTG-context] setuplayout vs Indesign!

[Henning Hraban Ramm]

> Am 26.08.2020 um 08:44 schrieb jbf <roma83537 at gmail.com>:
> 
> Severe Covid-19 restrictions locally have left me out on a limb unable to be side-byside with people who can set me on track for a few things! Hence the bombardment of questions, for which I apologise. But almost there!
> 
> The InDesign QC individual (who accepts my ConTeXt-produced pdfs) wants some tweaking to my layout, saying, in simple terms: Odd/right pgs left margin should be 20mm and right margin 15mm; even/left pgs right margin 20mm and left margin 15mm.
> 
> I think the difficulty is that what InDesign calls margins might be termed a little differently in ConTeXt and I have no experience with InDesign.
> 
> My initial setup was as follows for a paper size defined as [width=140mm,height=216mm] double-sided setup (in other words a standard 8.5"x5.5" book):
> 
> \setuplayout
> 
> [backspace=16mm,
>     topspace=12mm, 
>     header=6mm,
>     headerdistance=10mm,
>     footerdistance=9mm,
>     footer=8mm,
>     width=fit,
>     horoffset=12.7mm,
>     location=middle, 
>     height=198mm, 
>     marking=on]
> 
> There was no mention of 'margins' as such in that layout, and the result is close to what is wanted but not quite. Do I solve the problem by adding in: leftmargin=20mm,
> rightmargin=15mm,
> 
> or is it some other item I need to adjust to ensure the 20mm/15mm dimensions requested?

If you don’t need marginals, your left margin is backspace, right margin is: paper width - width - backspace, i.e. for A4:

\setuplayout[
  backspace=20mm,
  width=175mm
]
\setuppagenumbering[alternative=doublesided] % mirror right and left pages


See also https://wiki.contextgarden.net/Layout

Hraban