Se parliamo della stessa cosa, ci credo che l’errore è grave:`
%==============================axodraw.sty===========================%
%
% Style file for the drawing of Feynman diagrams with LaTeX.
% It assumes that the dvips that is used is by Radical Eye Software
% (by Rokicki), because the graphics primitives are given in
% postscript. If you do not work with a dvi to postscript converter
% you are out of luck.
%
% Made by J.A.M. Vermaseren 14-feb-1994
%
% Use:
% Enter the picture environment with for instance
% \begin{picture}(width,height)(0,0)
% statements
% \end{picture}
% All statements should be entered inside the picture environment.
% All coordinates should be in terms of pt (but the pt must be omitted).
% One may also use the figure environment.
%
\input{epsf.sty}
% #[ inventory :
%
% The variables in are:
% mtrx,num,ampi,x1,y1,x2,y2,dx,dy,dr,speed
% step,phi,arcend,arcstart,radius
% theindex,thechar,darc,const,amp1 amp2 amp3
% gcolor,xx,name,name1,name2,xx1,xx2
%
% NOTE: blank lines are not allowed inside the postscript code!!!!!
% (LaTeX sneaks \par commands in and the postscript goes boink)
%
`Alla fine, si torna sempre lì! Non dubito che sia un buon pacchetto e tutto, ma se un pacchetto non è presente su CTAN e non viene aggiornato dal ’94, io due domande me le farei.
Ciao
Claudio