% Test file

\setupinteraction
  [state=start,
   style=,
   color=blue,
   contrastcolor=,
   menu=on,
   title=Cross referencing Test File,
   author=Gerard Verhaag]

\starttext

\useexternaldocument[tst][test][Een test external] % External file called: test.tex

Most \from[tst] from \in{section}[tst::def].

\stoptext