Is there a way to make \placefigure[left,right] work in RTL documents?  Here's a MWE:

\starttext
\setupalign[r2l]
\placefigure[none,right]{}{\externalfigure[cow]}
\input knuth
\placefigure[none,left]{}{\externalfigure[cow]}
\input knuth
\page
\setupalign[l2r]
\placefigure[none,right]{}{\externalfigure[cow]}
\input knuth
\placefigure[none,left]{}{\externalfigure[cow]}
\input knuth
\stoptext

Thanks a lot,

--MHB