Hallo! The following: ------- \definepapersize [RM] [width=170mm,height=240mm] \setuppapersize [RM] [A4] \setuplayout [marking=on, location=middle] \starttext Bla \stoptext ------- results in 163mm width and 230mm height. What is wrong here? A second observation: file 'rm.tex' with \startenvironment rm ... \stopenvironment is not found in 'test.tex' with \environment rm ... renaming to 'whatever' helps Wolfgang