diff --git a/iocs/example/configure/RELEASE b/iocs/example/configure/RELEASE
index b21f2dd0..5840770b 100644
--- a/iocs/example/configure/RELEASE
+++ b/iocs/example/configure/RELEASE
@@ -1,7 +1,4 @@
-# This file was automatically generated on Fri 25 May 2018 08:06:10 BST from
-# source: /home/hgv27681/R3.14.12.3/support/pmac/etc/makeIocs/lab.xml
-# 
-# *** Please do not edit this file: edit the source file instead. ***
+# The following definitions must be changed for each site
 # 
 # Common prefixes
 SUPPORT = /dls_sw/prod/R3.14.12.3/support
@@ -10,6 +7,7 @@ ASYN = $(SUPPORT)/asyn/4-31
 BUSY = $(SUPPORT)/busy/1-6-1dls1
 CALC = $(SUPPORT)/calc/3-1
 MOTOR = $(SUPPORT)/motor/6-9dls14
-PMAC = /home/hgv27681/R3.14.12.3/support/pmac
+PMAC = $(TOP)/../../
 # EPICS Base appears last
 EPICS_BASE = /dls_sw/epics/R3.14.12.3/base
+EPICS_EXTENSIONS = /dls_sw/epics/R3.14.12.3/extensions
diff --git a/iocs/example/iocBoot/ioclab/Makefile b/iocs/example/iocBoot/ioclab/Makefile
index 65a2c3ef..b0bcfc06 100644
--- a/iocs/example/iocBoot/ioclab/Makefile
+++ b/iocs/example/iocBoot/ioclab/Makefile
@@ -8,7 +8,7 @@ include $(TOP)/configure/CONFIG
 
 SCRIPTS += ../stlab.sh
 SCRIPTS += stlab.boot
-PATH := $(PATH):/dls_sw/epics/R3.14.12.3/extensions/bin/linux-x86_64
+PATH := $(PATH):$(EPICS_EXTENSIONS)/bin/linux-x86_64
 
 include $(TOP)/configure/RULES
 
diff --git a/iocs/example/labApp/Db/Makefile b/iocs/example/labApp/Db/Makefile
index 2deadbe1..a6c1953a 100644
--- a/iocs/example/labApp/Db/Makefile
+++ b/iocs/example/labApp/Db/Makefile
@@ -6,7 +6,7 @@
 TOP = ../..
 include $(TOP)/configure/CONFIG
 
-PATH := $(PATH):/dls_sw/epics/R3.14.12.3/extensions/bin/linux-x86_64
+PATH := $(PATH):$(EPICS_EXTENSIONS)/bin/linux-x86_64
 DB += lab_expanded.db
 DB += lab.db
 
diff --git a/iocs/example/labApp/opi/edl/stlab-gui b/iocs/example/labApp/opi/edl/stlab-gui
index cc53588a..05096d02 100644
--- a/iocs/example/labApp/opi/edl/stlab-gui
+++ b/iocs/example/labApp/opi/edl/stlab-gui
@@ -1,6 +1,10 @@
 #!/bin/sh
 TOP="$(cd $(dirname "$0")/../..; pwd)"
 
+# The following two definitions must be changed for each site
+MOTOR="/dls_sw/prod/R3.14.12.3/support/motor/6-9dls14"
+PMAC="/home/hgv27681/R3.14.12.3/support/pmac"
+
 # first load the paths. These have been generated from the configure/RELEASE
 # tree. If we have a -d arg then load the opi/edl paths first
 shopt -s nullglob
@@ -10,16 +14,16 @@ if [ "$1" = "-d" ]; then
         EDMDATAFILES="${EDMDATAFILES}${d}:"
     done
     EDMDATAFILES="${EDMDATAFILES}${TOP}/data:"
-    EDMDATAFILES="${EDMDATAFILES}/dls_sw/prod/R3.14.12.3/support/motor/6-9dls14/motorApp/opi/edl:"
-    EDMDATAFILES="${EDMDATAFILES}/home/hgv27681/R3.14.12.3/support/pmac/pmacApp/opi/edl:"
+    EDMDATAFILES="${EDMDATAFILES}${MOTOR}/motorApp/opi/edl:"
+    EDMDATAFILES="${EDMDATAFILES}${PMAC}/pmacApp/opi/edl:"
 
     OPTS="-x -eolc"
 else
     OPTS="-x -eolc -noedit"
 fi
 EDMDATAFILES="${EDMDATAFILES}${TOP}/data"
-EDMDATAFILES="${EDMDATAFILES}:/dls_sw/prod/R3.14.12.3/support/motor/6-9dls14/data"
-EDMDATAFILES="${EDMDATAFILES}:/home/hgv27681/R3.14.12.3/support/pmac/data"
+EDMDATAFILES="${EDMDATAFILES}:${MOTOR}/data"
+EDMDATAFILES="${EDMDATAFILES}:${PMAC}/data"
 
 export EDMDATAFILES