\useMPlibrary[dum]

\starttext

\showboxes

\starthanging[location=left]{\externalfigure[dummy][width=4cm,height=3\lineheight]}
\input tufte
\stophanging

\starthanging[location=right]{\externalfigure[dummy][width=4cm,height=3\lineheight]}
\input tufte
\stophanging

\blank

\startalignment[righttoleft]
    \starthanging[location=left]{\externalfigure[dummy][width=4cm,height=3\lineheight]}
    \input tufte
    \stophanging
    \starthanging[location=right]{\externalfigure[dummy][width=4cm,height=3\lineheight]}
    \input tufte
    \stophanging
\stopalignment

\stoptext
