% example by Elias Oltmanns - criterium=page

\setuplayout[backspace=5cm,width=middle,rightmarginwidth=3cm,rightmargindistance=3mm]

\setupnote[footnote][location=text,rule=off,align=right,criterium=page]

\setupnotation[footnote][location=left]

\startsetups flushnotes
    \framed
      [frame=off,
       offset=none,
       align=low,
       height=\textheight,
       width=broad]
      {\placenotes[footnote]}
\stopsetups

\setuptexttexts
  [margin]
  []
  [\setups{flushnotes}]

\starttext

    \dorecurse{10}
      {\section{Section}
       As Knuth himself wrote\footnote{See knuth.tex (part of every \CONTEXT--distribution)}:
       \input knuth\par}

\stoptext
