refined code generator setup for rational numbers; more simplification rules for rational numbers
%%
%% $Id$
%%
%% default hyperref setup (both for pdf and dvi output)
%%
\usepackage{color}
\definecolor{linkcolor}{rgb}{0,0,0.5}
\usepackage[colorlinks=true,linkcolor=linkcolor,citecolor=linkcolor,filecolor=linkcolor,pagecolor=linkcolor,urlcolor=linkcolor]{hyperref}