\RequirePackage{color}
\usepackage{pschangebar}

\DeclareRobustCommand{\DIFaddbegin}[1]{\pscbstartid{#1}}
\DeclareRobustCommand{\DIFaddend}[1]{\pscbendid{#1}}

\DeclareRobustCommand{\DIFdelbegin}[1]{}
\DeclareRobustCommand{\DIFdelend}[1]{}

\DeclareRobustCommand{\DIFadd}[1]{{\color{blue} #1}}
\DeclareRobustCommand{\DIFdel}[1]{{\color{red} \scriptsize #1}}

