On 2/28/2018 5:28 AM, Henri Menke wrote:

Dear list,

I was wondering, why is the text in the main text block offset by .25\exheight from above (and below)?  Also, can you point me to the source line where this offset is added in shipout because it is not there in \setuplayout.  If you don't know what I mean, see MWE below.

Cheers, Henri

---

\definelayer   [pagebg]   [width=\textwidth,    height=\textheight]

\setupbackgrounds   [text][background=pagebg]

\showframe

\starttext

\setlayer   [pagebg]   [voffset=.25\exheight] % why?   {\vbox{\strut\input lorem\par}}

\input lorem\par

\stoptext \definelayer [pagebg] [width=\textwidth, height=\textheight]

\setupbackgrounds [text][background=pagebg] \showframe \starttext \setlayer [pagebg] {\vbox{\red\strut\input lorem\par}} \setlayer [pagebg] [voffset=\dimexpr\topskip-\strutht\relax] % why? {\vbox{\green\strut\input lorem\par}} \setlayer [pagebg] {\vbox{\blue\topskipcorrection\strut\input lorem\par}} \input lorem\par \stoptext ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------