[NTG-context] What is required to make \setuplayout work?

[Wolfgang Schuster]

Gerben Wierda schrieb am 17.05.2020 um 22:24:
> I’ve been trying to define a layout that just has a 5mm no-printing edge 
> around the paper and has all the rest for \textwidth and \textheight. No 
> header, footer, pagenumber, etc. Just as much space as I can get out of 
> a standard A4.
> 
> But the following (following the manual and ConTeXtgarden):
> 
> \setuplayout[leftedge=5mm,top=5mm,rightedge=5mm,bottom=5mm,
> leftmargin=0mm,rightmargin=0mm,
> margindistance=0mm,edgedistance=0mm,
> topdistance=0mm,headerdistance=0mm,footerdistance=0mm,bottomdistance=0mm]
> \showlayoutcomponents % doesn’t seem to do anything
> \showframe % this works
> \starttext
> \input knuth
> \stoptext
> 
> Doesn’t seem to change the layout. What am I missing?

You're changing the wrong values.

What you have to change are the backspace, topspace, header and footer 
values.

\setuplayout
   [backspace=5mm,
    width=middle,
    topspace=5mm,
    height=middle,
    header=0pt,
    footer=0pt]

\showframe[text]

\starttext
\page[dummy]
\stoptext


Can you also use the predefined page layout which sets all values to 0pt 
and uses all available space, to get margin increase the backspace and 
topspace values.

\setuplayout
   [page]
   [backspace=5mm,
    topspace=5mm]

\setuplayout [page]

\showframe[text]

\starttext
\page[dummy]
\stoptext


Another even short setup is when you use the predefined tight layout 
which has a default value of 5mm for all margins.

\setuplayout [tight]

\showframe[text]

\starttext
\page[dummy]
\stoptext


Wolfgang