\enabledirectives[otf.analyze.useunicodemarks]

\definefont[Amiri]   [file:amiri-regular.ttf*arabic at 15pt]
\definefont[Arabtype][file:arabtype*arabic at 20pt]

% \enabletrackers[otf.replacements,otf.contexts,otf.applied,otf.bugs]
% \enabletrackers[otf.analyzing]

\starttext

\startTEXpage

%     \enabletrackers[otf*]

    \textdir TRT \Amiri    بِسْم اللَّهِ الرَّحْمَنِ الرَّحِيم \par
    \textdir TRT \Arabtype بِسْم اللَّهِ الرَّحْمَنِ الرَّحِيم \par

\stopTEXpage

\stoptext
