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%%
%% Ein Beispiel der DANTE-Edition
%%
%% 2. Auflage
%%
%% Beispiel 15-02-18 auf Seite 722.
%%
%% Copyright (C) 2016 Herbert Voss
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%%
%% See http://www.latex-project.org/lppl.txt for details.
%%
%%
%% ====
% Show page(s) 1
%%
defaultfont:="ptmr8r";
warningcheck:=0;
% --- start of displayed preamble in the book ---
% --- end of displayed preamble in the book ---
% %
beginfig(1)
pair A,B,C,D,M;
A=(0,0); B=(2cm,3cm);C=(1cm,0); D=(-1cm,2cm);
M=whatever [A,B]; M=whatever [C,D];
draw A--B; draw C--D;
draw M withpen pencircle scaled 4bp;
endfig;
end;
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