works ok here (in latest beta)

Sorry, my fault. Of course it works, but it was not r2l (and so not readably), this one is the not working: \definefont[amiri][file:amiri-regular.ttf*arabic at 17pt] \define[1]\Arab{\setuplayout[r2l] \amiri#1} \starttext \Arab{بِسْمِ اللَّـهِ الرَّ‌حْمَـٰنِ الرَّ‌حِيمِ} \stoptext Maybe the command \setuplayout[r2l] should be replaced by some other command? Here is the error (now also with the last beta, I updated): "Missing number" +++++++++++++++++++++++++++++++++++++++++++++++ ! Missing number, treated as zero. system > tex > error on line 4 in file .../Namenlos-1.tex: Missing number, treated as zero ... 1 \definefont[amiri][file:amiri-regular.ttf*arabic at 17pt] 2 \define[1]\Arab{\setuplayout[r2l] \amiri#1} 3 \starttext 4 >> \Arab{بِسْمِ اللَّـهِ الرَّ‌حْمَـٰنِ الرَّ‌حِيمِ} 5 \stoptext 6 7 8 9 10 11 12 13 <to be read again> \global \page_layouts_synchronize ...c!leftmargin \global \rightmarginwidth \layoutp... <inserted text> ...ayout \currentlayout \page_layouts_synchronize \page_layouts_check_next \... \setup_layout ...tsetnamed \the \everysetuplayout \the \everyswitchlayout \f... \syst_helpers_double_empty_one_spaced ...1[{#2}][] <to be read again> \amiri ... l.4 ...�‌حْمَـٰنِ الرَّ‌حِيمِ} +++++++++++++++++++++++++++++++++++++++++++++++ Thanks. Huseyin