\usepackage{hyperref}
\usepackage{xspace}
-\def\PIPS{PIPS\xspace}
+\newcommand\PIPS{PIPS\xspace}
\title{\PIPS~--- List of code transformations}
\item[goto elimination]{
is the process of replacing \texttt{goto} instructions by a hierarchical control flow
graph.}
+
\item[outlining]{
is the process of extracting part of a function body into a new function
and replacing it in the initial function by a function call.}