%* *
%****************************************************************
-\newcommand{\srcloc}[1]{\marginpar{\footnotesize\tt #1}}
+\newcommand{\srcloc}[1]{\mbox{}\marginpar{\footnotesize\tt #1}}
%
% to avoid src-location marginpars, put this in your doc's pre-amble.
%\renewcommand{\srcloc}[1]{}