diff --git a/site_ansto/instrument/deploySICS.sh b/site_ansto/instrument/deploySICS.sh
index 5a487e89..53c4ee01 100755
--- a/site_ansto/instrument/deploySICS.sh
+++ b/site_ansto/instrument/deploySICS.sh
@@ -1,8 +1,6 @@
-#!/bin/bash 
-# $Revision: 1.28.10.1 $
-# $Date: 2010-01-27 03:15:13 $
+#!/bin/bash
 # Author: Ferdi Franceschini (ffr@ansto.gov.au)
-# Last revision by $Author: jgn $
+# Author: Douglas Clowes (dcl@ansto.gov.au)
 
 # Deploys SICServer and configuration files to
 # an instrument control computer.
@@ -54,8 +52,10 @@ copy_server_config() {
   fi
 }
 
+# Set shell matches to be case insensitive
 shopt -s nocasematch
 
+# If the first argument is "-n" then it is a dry-run only
 if [[ "$1" = "-n" ]]
 then
   DEPLOY="NO"
@@ -64,12 +64,17 @@ else
   DEPLOY="YES"
 fi
 
+# If the wrong number of arguments is given, print usage info and exit
 if  [ $# -eq 0 -o $# -gt 3 ]
 then
   usage
   exit 1
 fi
 
+# Allow test/animal or animal/test or just animal
+# animal produces TESTING=".", INSTRUMENT=animal
+# test/animal produces TESTING=test, INSTRUMENT=animal
+# animal/test produces TESTING=animal, INSTRUMENT=test (we then swap them)
 TESTING=$(dirname "$1")
 INSTRUMENT=$(basename "$1")
 if [[ "$INSTRUMENT" = "test" ]]
@@ -81,7 +86,10 @@ fi
 SRCDIR="."
 TEMPDIR=$HOME/tmp
 
-
+# We allow the instrument to be specified as either the animal name or the
+# mnemonic as we have to map between the two. This is because the source
+# directory is named by the mnemonic and the destination directory is named by
+# the animal. Any instrument-specific processing should be done within the case.
 
 # Set the destination host
 # instrument name and the
@@ -138,8 +146,10 @@ INSTSRC=$SRCDIR/dingo;;
 esac
 INSTCFDIR=$INSTSRC/config
 
+# Perform any instrument-specific make processing
 make -C ../ $INSTRUMENT || exit $?
 
+# Set up the staging directories and, if testing, the testing parts
 if [[ "$TESTING" = "test" ]]
 then
   DESTHOST=${2:-ics1-test.nbi.ansto.gov.au}
@@ -162,8 +172,10 @@ else
   mkdir -p $TEMPDIR/$DESTDIR
 fi
 
+# Notify progress and intention
 echo "Deploying $INSTRUMENT to $DESTHOST:$DESTDIR"
 
+# Set up the commands that we will be using for the "deploy" phase
 EXTRACT_CMDS="tar vxzp -C /; touch /$DESTDIR/{DataNumber,extraconfig.tcl,newserver/config/nexus/nexus.dic,script_validator/DataNumber}"
 if [[ "$DESTHOST" = "localhost" ]]
 then
@@ -178,6 +190,7 @@ EXTRACT="ssh $DESTHOST $EXTRACT_CMDS"
 EXTRACT_NODEPLOY="ssh $DESTHOST $EXTRACT_CMDS"
 fi
 
+# Ensure that we have the needed manifest files
 if [ ! -e $SRCDIR/MANIFEST.TXT ]
 then
 echo "$SRCDIR/MANIFEST.TXT not found"