\setuppagenumbering[alternative=doublesided]

\starttext

\input ward

\startnarrower[2*left]
    \input ward
    \startnarrower[2*left]
        \input ward
    \stopnarrower
\stopnarrower

\page

\input ward \par
    {\textdir TRT \input ward  \par}
    \startnarrower[2*left]
        \input ward \par
        {\textdir TRT \input ward \par }
    \startnarrower[2*left]
        \input ward \par
        {\textdir TRT \input ward \par }
    \stopnarrower
\stopnarrower

\page

\input ward \par
{\righttoleft \input ward \par }

\startnarrower[2*left]
    \input ward \par
    {\righttoleft \input ward \par }
    \startnarrower[2*left]
        \input ward \par
        {\righttoleft \input ward \par }
    \stopnarrower
\stopnarrower

\stoptext
