
\def\startMyCite#1{\startbuffer[#1]\startlines[#1]}
\def\stopMyCite#1{\stoplines[#1]\stopbuffer}

\def\getMyCite#1{%
  \startlinenumbering[{\in[lr:b:#1]}] % the result of \in[lr:b:#1]
    \getbuffer[#1]
  \stoplinenumbering}


\starttext

\startbodymatter
  test text test text test text test text test text test text test
  text test text test text test text test text test text test text

  she told: \getMyCite{test} % perhaps better \getMyCite[test]
  
  test text test text test text test text test text test text test
  text test text test text test text test text test text test text
\stopbodymatter


\startappendices
  \startlinenumbering
    We thrive in information--thick worlds because of our marvelous
    and everyday ca- pacity to select, edit, single out, structure,
    highlight, group, pair, merge, harmo- nize, synthesize, focus,
    \startMyCite{test}
      organize, condense, reduce, boil down, choose, categorize,
      catalog, classify, list, abstract, scan, look into, idealize,
      isolate, discriminate, dis- tinguish, screen, pigeonhole, pick
      over, sort, integrate, blend, inspect, filter, lump, skip,
      smooth, chunk, average, approximate, cluster, aggregate,
      outline, summarize, itemize, review, dip into, flip through,
      browse, glance into, leaf through,
    \stopMyCite{test}
    skim, re- fine, enumerate, glean, synopsize, winnow the wheat from
    the chaff and separate the sheep from the goats.
  \stoplinenumbering
\stopappendices

\stoptext

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