> Procházka Lukáš Ing. <mailto:LPr@pontex.cz>
> 18. Juli 2016 um 16:59
> Hello,
>
> one more problem - paper height still 297 mm?
>
> ----
> \definepapersize[A4L][A4,landscape]
>
> \showframe
>
> \starttext
>   \setuppapersize[A4L]
>   A4L
> \stoptext
> ----
Look at Hans answer, you need at the moment a third argument for the 
\definepapersize but he's going to allow two as well.

Wolfgang