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\section*{Preface}
\pdfbookmark[1]{Preface}{preface} EuroForth is an annual conference on
the Forth programming language, stack machines, and related topics,
and has been held since 1985.  The 36th EuroForth finds us mostly at
home, thanks to Covid19, and the conference is being held on the
Internet.  The two previous EuroForths were held in Hamburg, Germany
(2019) and in Edinburgh, Scotland (2018).  Information on earlier
conferences can be found at the EuroForth home page
(\url{http://www.euroforth.org/}).

Since 1994, EuroForth has a refereed and a non-refereed track.  This
year there have been no submissions to the refereed track.\comment{,
  which was accepted (100\% acceptance rate).  For more meaningful
  statistics, I include the numbers since 2006: 28 submissions, 20
  accepts, 71\% acceptance rate.  The paper was sent to three program
  committee members for review, and they all produced reviews.  The
  reviews of all papers are anonymous to the authors: The paper was
  reviewed and the final decision taken without involving the authors.
  This year the only submission was co-authored by the program chair;
  Ulrich Hoffmann served as secondary chair and organized the
  reviewing and the final decision for that paper.}  Nevertheless, I
thank the program committee for their willingness to review the
papers.  I thank the authors for their papers.

\comment{Several papers \comment{and slide handouts} were submitted to the
non-refereed track in time to be included in the printed proceedings.}
Late papers will be included in the final proceedings
(\url{http://www.euroforth.org/ef20/papers/}).

These online proceedings
also contain \comment{papers and} presentations that were too late to
be included in the proceedings available during the
conference.\comment{Also, some of the papers included in the printed
  proceedings were updated for these online proceedings.}

You can find these proceedings, as well as the individual papers and
slides, and links to the presentation videos on
\url{http://www.euroforth.org/ef20/papers/}.

Workshops and social events complement the program.  This year's
EuroForth is organized by Gerald Wodni.
\vspace{2ex}

\hfill Anton Ertl

\subsection*{Program committee}

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M. Anton Ertl, TU Wien (chair)

Ulrich Hoffmann, FH Wedel University of Applied Sciences

Matthias Koch, Institute of Quantum Optics, Leibniz University Hannover

Jaanus Pöial, Tallinn University of Technology

Bradford Rodriguez, T-Recursive Technology

Bill Stoddart

Reuben Thomas, SC3D Ltd.
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