\documentclass[a4paper, 11pt]{article}
\begin{document}
\section{Introduction}

This document describes what will be needed of a wrapper for the CCP4
program combat.

This is a simple example of how to use combat to take scaled data from 
XSCALE and pass it to Scala to merge.


{
\tiny
\begin{verbatim}
#!/bin/bash
combat hklin SCALED.HKL hklout SCALED.HKL.tmp1 << eof

# this prevents large negative reflections which will break
# sortmtz
scales 0.02
input XDSASCII
pname default
dname xds
eof
\end{verbatim}
}

\end{document}