prologues:=3;

if scantokens(mpversion) > 1.005:
 outputtemplate :=
else:
 filenametemplate
fi
"%j-%c.mps";

verbatimtex
%&latex
\documentclass[11pt]{article}
\usepackage[charter]{mathdesign}
\usepackage[T1]{fontenc}
\renewcommand*{\ttdefault}{lmtt}
\begin{document}
etex

% Set unit size to 72bp = 1in
u:=72;

beginfig(1);
       % Draw line segmented path
       draw (0,0)--(3*u/4,u/4)--(u,u) dashed evenly scaled 0.6;

       % Draw curved path
       draw (0,0){right}..{dir 45}(3*u/4,u/4){dir 45}..{up}(u,u);

       % Label the 3 points
       label.bot(btex \texttt{z1} etex,(0,0));
       label.lrt(btex \texttt{z2} etex,(3*u/4,u/4));
       label.rt(btex \texttt{z3} etex,(u,u));
endfig;

beginfig(2);
       % Draw arrow around curved path
       drawarrow (0,0){right}..{dir 45}(3*u/4,u/4){dir 45}..{up}(u,u);

       % Label the 3 points
       label.bot(btex \texttt{z1} etex,(0,0));
       label.lrt(btex \texttt{z2} etex,(3*u/4,u/4));
       label.rt(btex \texttt{z3} etex,(u,u));
endfig;
end

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