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<DIV>Bonjour,</DIV>
<DIV> </DIV>
<DIV>In the second psmatrix is it possible to replace the line  ~ & 1 
& & 3 \\ by something like  [mnode=something] ~ & 1 & & 
3 \\ to don't have the circle before the arrow ?</DIV>
<DIV> </DIV>
<DIV>In the of pst-node i read mnode=type parameter. Who are the type possible 
for mnode ?</DIV>
<DIV> </DIV>
<DIV>\qquad \begin{psmatrix}</DIV>
<DIV>
<P style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">& & 
[mnode=circle] 5 \\</P>
<P style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">& & 
[mnode=circle,doubleline=true] 4 \\</P>
<P style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">~ & 
[mnode=circle] 1 & & [mnode=circle] 3 \\</P>
<P style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">& & 
[mnode=circle] 2</P>
<P style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\end{psmatrix}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\psset{arrows=->,shortput=nab,arrowsize=0.15}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\nccircle[angleA=0]{3,2}{0.5cm}\nbput{$b$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncline{2,3}{3,2}_{$b$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncarc[arcangle=15]{3,2}{4,3}^{$a$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncarc[arcangle=15]{4,3}{3,2}^{$b$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncline{3,4}{3,2}\nbput{$b$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncline{2,3}{1,3}^{$a$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncline{3,4}{2,3}_{$a$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncline{4,3}{3,4}_{$a$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\nccircle[angleA=90]{1,3}{0.5cm}\nbput{$b$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\nccircle[angleA=-90]{1,3}{0.5cm}\nbput{$a$}</P>
<P style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">{ 
\psset{doubleline=true} </P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncline{3,1}{3,2}^{départ~}</P>
<P style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0; -qt-paragraph-type: empty"><BR></P>
<P style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\vspace*{2cm} </P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0; -qt-paragraph-type: empty"><BR></P>
<P style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\qquad 
\begin{psmatrix}[mnode=circle]</P>
<P style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">& & 5 
\\</P>
<P style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">& & 
[doubleline=true] 4 \\</P>
<P style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">~ & 1 & 
& 3 \\</P>
<P style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">& & 2</P>
<P style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\end{psmatrix}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\psset{arrows=->,shortput=nab,arrowsize=0.15}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\nccircle[angleA=0]{3,2}{0.5cm}\nbput{$b$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncline{2,3}{3,2}_{$b$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncarc[arcangle=15]{3,2}{4,3}^{$a$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncarc[arcangle=15]{4,3}{3,2}^{$b$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncline{3,4}{3,2}\nbput{$b$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncline{2,3}{1,3}^{$a$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncline{3,4}{2,3}_{$a$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncline{4,3}{3,4}_{$a$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\nccircle[angleA=90]{1,3}{0.5cm}\nbput{$b$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\nccircle[angleA=-90]{1,3}{0.5cm}\nbput{$a$}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\psset{doubleline=true}</P>
<P 
style="MARGIN: 0px; TEXT-INDENT: 0px; -qt-block-indent: 0">\ncline{3,1}{3,2}^{départ~}</P></DIV>
<DIV> </DIV>
<DIV>Thanks for yours answers.</DIV>
<DIV> </DIV>
<DIV></DIV>
<DIV>Germain </DIV></BODY></HTML>