diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
new file mode 100644
index 000000000..68a1db8f2
--- /dev/null
+++ b/.github/workflows/pre-commit.yml
@@ -0,0 +1,23 @@
+name: pre-commit
+
+on: [push, pull_request]
+
+jobs:
+  pre-commit:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: cvmfs-contrib/github-action-cvmfs@v3.1
+    - uses: aidasoft/run-lcg-view@v4
+      with:
+        release-platform: LCG_101/x86_64-centos7-clang12-opt
+        run: |
+          export PYTHONPATH=$(python -m site --user-site):$PYTHONPATH
+          export PATH=/root/.local/bin:$PATH
+          pip install --upgrade --user pip
+          pip install pre-commit --user
+          # Use virtualenv from the LCG release
+          pip uninstall --yes virtualenv
+          pre-commit run --show-diff-on-failure \
+            --color=always \
+            --all-files
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 000000000..23ef8b85a
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,5 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.5.0
+    hooks:
+      - id: check-xml
diff --git a/FCCee/CLD/compact/FCCee_o0_v01/FCCee_o0_v01.xml b/FCCee/CLD/compact/FCCee_o0_v01/FCCee_o0_v01.xml
index 452fbb597..07abf8214 100644
--- a/FCCee/CLD/compact/FCCee_o0_v01/FCCee_o0_v01.xml
+++ b/FCCee/CLD/compact/FCCee_o0_v01/FCCee_o0_v01.xml
@@ -4,32 +4,32 @@
 <lccdd xmlns:compact="http://www.lcsim.org/schemas/compact/1.0"
     xmlns:xs="http://www.w3.org/2001/XMLSchema"
     xs:noNamespaceSchemaLocation="http://www.lcsim.org/schemas/compact/1.0/compact.xsd">
-    
+
     <info name="FCCee_o0_v01"
         title="FCCee detector model option 0 version 01"
-        status="development"
+        status="development">
         <comment>The compact format for the FCCee Detector design</comment>
     </info>
-    
+
     <includes>
         <gdmlFile  ref="elements.xml"/>
         <gdmlFile  ref="materials.xml"/>
     </includes>
-    
+
     <define>
         <constant name="world_side" value="7000*mm"/>
         <constant name="world_x" value="world_side"/>
         <constant name="world_y" value="world_side"/>
         <constant name="world_z" value="world_side"/>
-        
-       <constant name="CrossingAngle" value="0.030*rad"/>  
+
+       <constant name="CrossingAngle" value="0.030*rad"/>
 
        <!-- <constant name="CrossingAngle" value="-0.030*rad"/>   -->
 
 
         <constant name="SolenoidField" value="2*tesla"/>
-        
-        
+
+
         <constant name="DetID_NOTUSED"          value=" 0"/>
 
         <constant name="DetID_VXD_Barrel"       value=" 1"/>
@@ -40,21 +40,21 @@
 
         <constant name="DetID_OT_Barrel"        value=" 5"/>
         <constant name="DetID_OT_Endcap"        value=" 6"/>
-        
+
         <constant name="DetID_ECal_Barrel"      value=" 20"/>
         <constant name="DetID_ECal_Endcap"      value=" 29"/>
         <constant name="DetID_ECal_Plug"        value=" 21"/>
-        
+
         <constant name="DetID_HCAL_Barrel"      value=" 10"/>
         <constant name="DetID_HCAL_Endcap"      value=" 11"/>
         <constant name="DetID_HCAL_Ring"        value=" 12"/>
-        
+
         <constant name="DetID_Yoke_Barrel"      value=" 13"/>
         <constant name="DetID_Yoke_Endcap"      value=" 14"/>
-        
+
         <constant name="DetID_LumiCal"          value=" 15"/>
         <constant name="DetID_BeamCal"          value=" 16"/>
-        
+
         <constant name="BeamPipeWidth"   	value="0.5*mm" />
         <constant name="CentralBeamPipe_zmax" value="25*cm"/>
 	<constant name="SeparatedBeamPipe_z" value="100*cm"/>
@@ -67,9 +67,9 @@
 
 <!--  a cone until lumi front face, within the 100 mrad cone. To be followed by a Tube in the support of InnerTracker_o2_v03_02.xml -->
 <!--
-     	
+
         <constant name="ConeBeamPipe_zmax" value="1300*mm"/>
-	<constant name="ConeBeamPipe_rmax_1"  value="131*mm"/>  
+	<constant name="ConeBeamPipe_rmax_1"  value="131*mm"/>
 -->
 <!-- instead : the support cone extends until the end of the inner tracker, no Tube -->
         <constant name="InnerTracker_half_length" value="2190*mm" />
@@ -81,15 +81,15 @@
         <constant name="SeparatedBeamPipe_rmax"  value="12*mm"/>
         <constant name="BeamPipeTantalShieldWidth"  value="0.5*mm"/>
         <constant name="BeamPipe_end" value="12500*mm"/>
-        
-        
-        
+
+
+
         <!-- ################### ENVELOPE PARAMETERS ######################################################## -->
-        
+
         <comment> suggested naming convention:
-            
+
             main parameters:
-            
+
             DET_inner_radius    : inner radius of tube like envelope  ( inscribed cylinder )
             DET_outer_radius    : outer radius of tube like envelope  ( circumscribed cylinder )
             DET_half_length     : half length along z axis
@@ -99,19 +99,19 @@
             DET_outer_symmetry  : number of sides on the inside  ( 0 for tube )
             DET_inner_phi0      : optional rotation of the inner polygon ( in r-phi plane )
             DET_outer_phi0      : optional rotation of the outer polygon ( in r-phi plane )
-            
+
             additional parameters for cutting away volumes/shapes use one of the above with a number
             appended and/or an extra specifiaction such as cone ( for a cut away cone )
-            
+
             DET_inner_radius_1
             DET_outer_radius_2
             DET_cone_min_z
             DET_cone_max_z
-            
+
         </comment>
-        
+
         <constant name="env_safety" value="0.1*mm"/>
-        
+
 <!-- for ILD central VTX :    -->
 
         <constant name="TUBE_IPInnerTube_end_z"         value="80*mm"/>
@@ -140,7 +140,7 @@
   <constant name="VXD_cryostat_option" value="0"/>
 
 <!--
-<constant name="FTD_half_length"     value="1100*mm"/> 
+<constant name="FTD_half_length"     value="1100*mm"/>
 <constant name="FTD_inner_radius"    value=" 115*cm"/>
         <constant name="FTD_outer_radius_1"  value="115*cm"/>
         <constant name="FTD_outer_radius_2"  value="115*cm"/>
@@ -168,7 +168,7 @@
         <constant name="Vertex_outer_radius" value="111*mm"/>
         <constant name="Vertex_half_length" value="260*mm"/>
 -->
-        
+
         <constant name="Vertex_inner_radius" value="21*mm"/>
         <constant name="Vertex_outer_radius" value="111*mm"/>
         <constant name="Vertex_half_length" value="260*mm"/>
@@ -177,35 +177,35 @@
         <constant name="InnerTracker_outer_radius" value="580*mm"/>
         <!--<constant name="InnerTracker_half_length" value="2345*mm"/>  -->
         <!-- <constant name="InnerTracker_half_length" value="2190*mm" />  -->   <!-- given above -->
-        
+
         <constant name="OuterTracker_inner_radius" value="580*mm"/>
         <constant name="OuterTracker_outer_radius" value="1500*mm - 0.1*mm"/>  <!-- to avoid overlap with CaloFace-->
         <constant name="OuterTracker_half_length" value="2190*mm"/>
-        
+
         <constant name="ECalBarrel_inner_radius" value="1500*mm"/>
         <constant name="ECalBarrel_outer_radius" value="1659*mm"/>
         <constant name="ECalBarrel_half_length" value="2250*mm"/>
         <constant name="ECalBarrel_symmetry" value="12"/>
-        
+
         <constant name="ECalEndcap_inner_radius" value="410*mm"/>
         <constant name="ECalEndcap_outer_radius" value="1700*mm"/>
         <constant name="ECalEndcap_min_z" value="2350*mm"/>
         <constant name="ECalEndcap_max_z" value="2509*mm"/>
         <constant name="ECalEndcap_outer_symmetry" value="12"/>
         <constant name="ECalEndcap_inner_symmetry" value="12"/>
-        
+
         <constant name="ECalPlug_inner_radius" value="260*mm"/>
         <constant name="ECalPlug_outer_radius" value="380*mm"/>
         <constant name="ECalPlug_min_z" value="2350*mm"/>
         <constant name="ECalPlug_max_z" value="2509*mm"/>
         <constant name="ECalPlug_outer_symmetry" value="12"/>
         <constant name="ECalPlug_inner_symmetry" value="12"/>
-        
+
         <constant name="HCalBarrel_inner_radius" value="1697*mm"/>
         <constant name="HCalBarrel_outer_radius" value="3287*mm"/>
         <constant name="HCalBarrel_half_length" value="2250*mm"/>
         <constant name="HCalBarrel_symmetry" value="12"/>
-        
+
         <constant name="HCalEndcap_inner_radius" value="250*mm"/>
         <constant name="HCalEndcap_outer_radius" value="3203*mm"/>
         <constant name="HCalEndcap_min_z" value="2539*mm"/>
@@ -213,31 +213,31 @@
         <constant name="HCalEndcap_symmetry" value="12"/>
         <constant name="HCalEndcap_zcutout" value="200*mm"/>
         <constant name="HCalEndcap_rcutout" value="180*mm"/>
-        
+
         <constant name="HCalRing_inner_radius" value="1730*mm"/>
         <constant name="HCalRing_outer_radius" value="HCalEndcap_outer_radius"/>
         <constant name="HCalRing_min_z" value="2400*mm"/>
         <constant name="HCalRing_max_z" value="2539*mm"/>
         <constant name="HCalRing_symmetry" value="12"/>
-        
+
         <constant name="Solenoid_inner_radius" value="3440*mm"/>
         <constant name="Solenoid_outer_radius" value="4192*mm"/>
         <constant name="Solenoid_half_length" value="4129*mm"/>
-        <constant name="Solenoid_Coil_half_length" value="3900*mm"/>        
+        <constant name="Solenoid_Coil_half_length" value="3900*mm"/>
         <constant name="Solenoid_Coil_radius" value="3778*mm"/>
-        
+
         <constant name="YokeBarrel_inner_radius" value="4418*mm"/>
         <constant name="YokeBarrel_outer_radius" value="7004*mm"/>
         <constant name="YokeBarrel_half_length" value="4129*mm"/>
         <constant name="YokeBarrel_symmetry" value="12"/>
-        
+
         <constant name="YokeEndcap_inner_radius" value="630*mm"/>
         <constant name="YokeEndcap_outer_radius" value="7004*mm"/>
         <constant name="YokeEndcap_min_z" value="4179*mm"/>
         <constant name="YokeEndcap_max_z" value="5179*mm"/>
         <constant name="YokeEndcap_outer_symmetry" value="12"/>
         <constant name="YokeEndcap_inner_symmetry" value="0"/>
-        
+
         <constant name="CompSol_min_z" value="1300*mm"/>
 
 <!--
@@ -257,7 +257,7 @@
 
 
 
-        
+
         <constant name="BeamCal_inner_radius" value="32*mm"/>
         <constant name="BeamCal_outer_radius" value="150*mm"/>
         <constant name="BeamCal_min_z" value="3181*mm"/>
@@ -268,23 +268,23 @@
         <constant name="Kicker_outer_radius" value="25*mm"/>
         <constant name="Kicker_min_z" value="3480*mm"/>
         <constant name="Kicker_max_z" value="3780*mm"/>
-        
+
         <constant name="BPM_inner_radius" value="36*mm"/>
         <constant name="BPM_outer_radius" value="55*mm"/>
         <constant name="BPM_min_z" value="3790*mm"/>
-        <constant name="BPM_max_z" value="3880*mm"/>        
+        <constant name="BPM_max_z" value="3880*mm"/>
 
         <constant name="QD0_min_z" value="2200*mm"/>
         <constant name="QD0_max_z" value="5400*mm"/>
 	<constant name="QD0Coil_outer_radius" value="30*mm"/>
-        <constant name="CollimatorInFrontOfQD0_dz" value="20*cm"/>   
+        <constant name="CollimatorInFrontOfQD0_dz" value="20*cm"/>
         <constant name="CollimatorInFrontOfQD0_radius" value="10*mm"/>
         <constant name="CollimatorInFrontOfQD0_dr" value="16*mm"/>
-        
+
         <constant name="tracker_region_zmax" value="OuterTracker_half_length"/>
         <constant name="tracker_region_rmax" value="OuterTracker_outer_radius"/>
     </define>
-    
+
     <limits>
         <limitset name="cal_limits">
             <limit name="step_length_max" particles="*" value="5.0" unit="mm" />
@@ -308,9 +308,9 @@
             <limitsetref name="SiTrackerBarrelRegionLimitSet"/>
         </region>
     </regions>
-    
-    
-    
+
+
+
     <display>
 
 <!--
@@ -335,7 +335,7 @@
         <vis name="LCALVis"    alpha="1.0" r="0.25"  g="0.88"    b="0.81"  showDaughters="true"  visible="true"/>
 
         <vis name="BCALVis"     alpha="1.0" r="0.0"   g="0.4"     b="0.4"   showDaughters="true"  visible="true"/>
-        <vis name="KICKVis"     alpha="1.0" r="1.0"   g="0.498"   b="0.0"   showDaughters="true"  visible="true"/> 
+        <vis name="KICKVis"     alpha="1.0" r="1.0"   g="0.498"   b="0.0"   showDaughters="true"  visible="true"/>
         <vis name="QD0CoilIVis"     alpha="1.0" r="1.0"   g="0.498"   b="0.0"   showDaughters="true"  visible="true"/>
         <vis name="QD0CoilOVis"     alpha="1.0" r="1.0"   g="0.25"   b="0.0"   showDaughters="true"  visible="true"/>
         <vis name="CompSolVis"     alpha="1.0" r="0.5"   g="0.5"   b="0.0"   showDaughters="true"  visible="true"/>
@@ -343,27 +343,27 @@
         <vis name="ColliVis"        alpha="1.0" r="0.7"   g="0.5"   b="1"   showDaughters="true"  visible="true"/>
         <vis name="TantalumVis"     alpha="0.0" r="1"   g="0.5"   b="0.5"   showDaughters="true"  visible="true"/>
 
-        <vis name="BPMVis"      alpha="1.0" r="0.25"  g="0.88"    b="0.81"  showDaughters="true"  visible="true"/>                           
-        <vis name="SupportVis"  alpha="1"   r="0.2"   g="0.2"     b="0.2"   showDaughters="false" visible="true"/>        
+        <vis name="BPMVis"      alpha="1.0" r="0.25"  g="0.88"    b="0.81"  showDaughters="true"  visible="true"/>
+        <vis name="SupportVis"  alpha="1"   r="0.2"   g="0.2"     b="0.2"   showDaughters="false" visible="true"/>
     </display>
-    
+
     <include ref="Materials_v01.xml"/>
 
-    <include ref="Beampipe_o3_v01.xml"/>  
+    <include ref="Beampipe_o3_v01.xml"/>
     <!-- <include ref="Beampipe_o3_v01_noMask.xml"/>  -->
 
-    <include ref="BeamInstrumentation_o3_v01.xml"/>     
+    <include ref="BeamInstrumentation_o3_v01.xml"/>
     <include ref="LumiCal_o3_v01_01.xml"/>
 
-    <include ref="Vertex_o3_v03.xml"/>  
+    <include ref="Vertex_o3_v03.xml"/>
 
-    <include ref="InnerTracker_o3_v03.xml"/>   
+    <include ref="InnerTracker_o3_v03.xml"/>
     <include ref="OuterTracker_o2_v03_03.xml"/>
-    
+
     <include ref="ECalBarrel_o2_v01_01.xml"/>
     <include ref="ECalEndcap_o2_v01_01.xml"/>
     <include ref="ECalPlug_o1_v01_01.xml"/>
-    
+
     <include ref="HCalBarrel_o1_v01_01.xml"/>
     <include ref="HCalEndcap_o1_v01_01.xml"/>
 
@@ -425,8 +425,7 @@
 -->
 
 
-    </fields> 
+    </fields>
 
 
 </lccdd>
-
diff --git a/FCCee/IDEA/compact/IDEA_o1_v01/IDEA_o1_v01.xml b/FCCee/IDEA/compact/IDEA_o1_v01/IDEA_o1_v01.xml
index 73139600f..a40f6248b 100644
--- a/FCCee/IDEA/compact/IDEA_o1_v01/IDEA_o1_v01.xml
+++ b/FCCee/IDEA/compact/IDEA_o1_v01/IDEA_o1_v01.xml
@@ -11,7 +11,7 @@
     url="no"
     status="development"
     version="1.0">
-    <comment> 
+    <comment>
       One stop shop for a baseline / the latest developments of the FCCee Detector concept.
     </comment>
   </info>
@@ -39,6 +39,6 @@
   <!-- Vertex.xml comes from FCCee_o2_v02 /-->
   <include ref="Vertex.xml"/>
   <include ref="SimplifiedDriftChamber.xml"/>
-  <include ref="Calorimeter.xml">
+  <include ref="Calorimeter.xml"/>
 
 </lccdd>
diff --git a/SiD/compact/SiD_o1_v01/BeamPipe.xml b/SiD/compact/SiD_o1_v01/BeamPipe.xml
index b6ecd319c..ab5500496 100644
--- a/SiD/compact/SiD_o1_v01/BeamPipe.xml
+++ b/SiD/compact/SiD_o1_v01/BeamPipe.xml
@@ -1,3 +1,4 @@
+<lccdd>
 <comment>Beampipe</comment>
 
 <detectors>
@@ -84,5 +85,4 @@
 <!--     <zplane rmin="0.*cm" rmax="6.0*cm"    z="-tracking_region_zmax" /> -->
 <!-- </detector>  -->
 </detectors>
-
-
+</lccdd>
diff --git a/SiD/compact/SiD_o1_v01/HCalBarrel_o1_v03_00.xml b/SiD/compact/SiD_o1_v01/HCalBarrel_o1_v03_00.xml
index facb801d3..9ddd7f34b 100644
--- a/SiD/compact/SiD_o1_v01/HCalBarrel_o1_v03_00.xml
+++ b/SiD/compact/SiD_o1_v01/HCalBarrel_o1_v03_00.xml
@@ -1,8 +1,8 @@
 <lccdd>
 
 <!--
-     AHCal Barrel implementation of the layout from 70th SiD Optimization Meeting presentation 
-     from Ross Gordon McCoy (ross.mccoy@mavs.uta.edu) - June 30, 2016 
+     AHCal Barrel implementation of the layout from 70th SiD Optimization Meeting presentation
+     from Ross Gordon McCoy (ross.mccoy@mavs.uta.edu) - June 30, 2016
 -->
 
 <readouts>
@@ -38,8 +38,9 @@
 	<slice material = "Steel235"    thickness = "0.05*cm" /> <!-- Bottom plate -->
 	<!--slice material = "Air"    thickness = "0.1*cm" /-->
   </layer>
-  <!--layer repeat="1">
-	<!--slice material = "Steel235" thickness = "1.9*cm" /--><!-- Terminator plate -->
+  <!--layer repeat="1" -->
+  <!-- Terminator plate -->
+	<!--slice material = "Steel235" thickness = "1.9*cm" /-->
   <!--/layer -->
  </detector>
 </detectors>
diff --git a/SiD/compact/SiD_o1_v01/HCalEndcap_o1_v03_00.xml b/SiD/compact/SiD_o1_v01/HCalEndcap_o1_v03_00.xml
index 04948230a..3185b0c34 100644
--- a/SiD/compact/SiD_o1_v01/HCalEndcap_o1_v03_00.xml
+++ b/SiD/compact/SiD_o1_v01/HCalEndcap_o1_v03_00.xml
@@ -42,7 +42,8 @@
 	<!--slice material = "Air"    thickness = "0.1*cm" /-->
   </layer>
   <!--layer repeat="1"-->
-        <!--slice material = "Steel235" thickness = "1.9*cm" /><!-- Terminator plate -->
+        <!-- Terminator plate -->
+        <!--slice material = "Steel235" thickness = "1.9*cm" /-->
   <!--/layer-->
 </detector>
 </detectors>
diff --git a/SiD/compact/SiD_o1_v01/Support.xml b/SiD/compact/SiD_o1_v01/Support.xml
index 67cb683ca..7b734ccd9 100644
--- a/SiD/compact/SiD_o1_v01/Support.xml
+++ b/SiD/compact/SiD_o1_v01/Support.xml
@@ -1,3 +1,4 @@
+<lccdd>
 <!--  FG: fixme: should be split up into more individual files  ...v-->
 <detector name="VertexBarrelSupports" type="DD4hep_MultiLayerTracker" vis="InvisibleNoDaughters">
   <comment>Double-walled Carbon Fiber support tube</comment>
@@ -368,3 +369,4 @@
 <!--         <slice material="Steel235" thickness="SolenoidEndcapCryostatThickness" /> -->
 <!--     </layer> -->
 <!-- </detector> -->
+</lccdd>
diff --git a/SiD/compact/SiD_o2_v01/BeamPipe.xml b/SiD/compact/SiD_o2_v01/BeamPipe.xml
index b6ecd319c..ab5500496 100644
--- a/SiD/compact/SiD_o2_v01/BeamPipe.xml
+++ b/SiD/compact/SiD_o2_v01/BeamPipe.xml
@@ -1,3 +1,4 @@
+<lccdd>
 <comment>Beampipe</comment>
 
 <detectors>
@@ -84,5 +85,4 @@
 <!--     <zplane rmin="0.*cm" rmax="6.0*cm"    z="-tracking_region_zmax" /> -->
 <!-- </detector>  -->
 </detectors>
-
-
+</lccdd>
diff --git a/SiD/compact/SiD_o2_v01/Support.xml b/SiD/compact/SiD_o2_v01/Support.xml
index 67cb683ca..7b734ccd9 100644
--- a/SiD/compact/SiD_o2_v01/Support.xml
+++ b/SiD/compact/SiD_o2_v01/Support.xml
@@ -1,3 +1,4 @@
+<lccdd>
 <!--  FG: fixme: should be split up into more individual files  ...v-->
 <detector name="VertexBarrelSupports" type="DD4hep_MultiLayerTracker" vis="InvisibleNoDaughters">
   <comment>Double-walled Carbon Fiber support tube</comment>
@@ -368,3 +369,4 @@
 <!--         <slice material="Steel235" thickness="SolenoidEndcapCryostatThickness" /> -->
 <!--     </layer> -->
 <!-- </detector> -->
+</lccdd>
diff --git a/SiD/compact/SiD_o2_v02/BeamPipe.xml b/SiD/compact/SiD_o2_v02/BeamPipe.xml
index d4046a3a3..ab5500496 100644
--- a/SiD/compact/SiD_o2_v02/BeamPipe.xml
+++ b/SiD/compact/SiD_o2_v02/BeamPipe.xml
@@ -1,3 +1,4 @@
+<lccdd>
 <comment>Beampipe</comment>
 
 <detectors>
@@ -84,3 +85,4 @@
 <!--     <zplane rmin="0.*cm" rmax="6.0*cm"    z="-tracking_region_zmax" /> -->
 <!-- </detector>  -->
 </detectors>
+</lccdd>
diff --git a/SiD/compact/SiD_o2_v02/Support.xml b/SiD/compact/SiD_o2_v02/Support.xml
index 67cb683ca..7b734ccd9 100644
--- a/SiD/compact/SiD_o2_v02/Support.xml
+++ b/SiD/compact/SiD_o2_v02/Support.xml
@@ -1,3 +1,4 @@
+<lccdd>
 <!--  FG: fixme: should be split up into more individual files  ...v-->
 <detector name="VertexBarrelSupports" type="DD4hep_MultiLayerTracker" vis="InvisibleNoDaughters">
   <comment>Double-walled Carbon Fiber support tube</comment>
@@ -368,3 +369,4 @@
 <!--         <slice material="Steel235" thickness="SolenoidEndcapCryostatThickness" /> -->
 <!--     </layer> -->
 <!-- </detector> -->
+</lccdd>
diff --git a/SiD/compact/SiD_o2_v03/BeamPipe.xml b/SiD/compact/SiD_o2_v03/BeamPipe.xml
index d4046a3a3..ab5500496 100644
--- a/SiD/compact/SiD_o2_v03/BeamPipe.xml
+++ b/SiD/compact/SiD_o2_v03/BeamPipe.xml
@@ -1,3 +1,4 @@
+<lccdd>
 <comment>Beampipe</comment>
 
 <detectors>
@@ -84,3 +85,4 @@
 <!--     <zplane rmin="0.*cm" rmax="6.0*cm"    z="-tracking_region_zmax" /> -->
 <!-- </detector>  -->
 </detectors>
+</lccdd>
diff --git a/SiD/compact/SiD_o2_v03/Support.xml b/SiD/compact/SiD_o2_v03/Support.xml
index 67cb683ca..7b734ccd9 100644
--- a/SiD/compact/SiD_o2_v03/Support.xml
+++ b/SiD/compact/SiD_o2_v03/Support.xml
@@ -1,3 +1,4 @@
+<lccdd>
 <!--  FG: fixme: should be split up into more individual files  ...v-->
 <detector name="VertexBarrelSupports" type="DD4hep_MultiLayerTracker" vis="InvisibleNoDaughters">
   <comment>Double-walled Carbon Fiber support tube</comment>
@@ -368,3 +369,4 @@
 <!--         <slice material="Steel235" thickness="SolenoidEndcapCryostatThickness" /> -->
 <!--     </layer> -->
 <!-- </detector> -->
+</lccdd>
diff --git a/SiD/compact/SiD_o2_v04/Support.xml b/SiD/compact/SiD_o2_v04/Support.xml
index 67cb683ca..7b734ccd9 100644
--- a/SiD/compact/SiD_o2_v04/Support.xml
+++ b/SiD/compact/SiD_o2_v04/Support.xml
@@ -1,3 +1,4 @@
+<lccdd>
 <!--  FG: fixme: should be split up into more individual files  ...v-->
 <detector name="VertexBarrelSupports" type="DD4hep_MultiLayerTracker" vis="InvisibleNoDaughters">
   <comment>Double-walled Carbon Fiber support tube</comment>
@@ -368,3 +369,4 @@
 <!--         <slice material="Steel235" thickness="SolenoidEndcapCryostatThickness" /> -->
 <!--     </layer> -->
 <!-- </detector> -->
+</lccdd>
diff --git a/SiD/compact/SiD_o3_v02/BeamPipe.xml b/SiD/compact/SiD_o3_v02/BeamPipe.xml
index d4046a3a3..ab5500496 100644
--- a/SiD/compact/SiD_o3_v02/BeamPipe.xml
+++ b/SiD/compact/SiD_o3_v02/BeamPipe.xml
@@ -1,3 +1,4 @@
+<lccdd>
 <comment>Beampipe</comment>
 
 <detectors>
@@ -84,3 +85,4 @@
 <!--     <zplane rmin="0.*cm" rmax="6.0*cm"    z="-tracking_region_zmax" /> -->
 <!-- </detector>  -->
 </detectors>
+</lccdd>
diff --git a/SiD/compact/SiD_o3_v02/Support.xml b/SiD/compact/SiD_o3_v02/Support.xml
index 67cb683ca..7b734ccd9 100644
--- a/SiD/compact/SiD_o3_v02/Support.xml
+++ b/SiD/compact/SiD_o3_v02/Support.xml
@@ -1,3 +1,4 @@
+<lccdd>
 <!--  FG: fixme: should be split up into more individual files  ...v-->
 <detector name="VertexBarrelSupports" type="DD4hep_MultiLayerTracker" vis="InvisibleNoDaughters">
   <comment>Double-walled Carbon Fiber support tube</comment>
@@ -368,3 +369,4 @@
 <!--         <slice material="Steel235" thickness="SolenoidEndcapCryostatThickness" /> -->
 <!--     </layer> -->
 <!-- </detector> -->
+</lccdd>
diff --git a/SiD/compact/sidloi3/BeamPipe.xml b/SiD/compact/sidloi3/BeamPipe.xml
index 71a42230e..ae07f91d9 100644
--- a/SiD/compact/sidloi3/BeamPipe.xml
+++ b/SiD/compact/sidloi3/BeamPipe.xml
@@ -1,3 +1,4 @@
+<lccdd>
 <comment>Beampipe</comment>
 <detector name="Beampipe" type="DD4hep_PolyconeSupport" insideTrackingVolume="true" vis="BeampipeVis">
   <comment>Central Be Beampipe</comment>
@@ -78,6 +79,4 @@
 <!--     <zplane rmin="0.*cm" rmax="6.0*cm"    z="-182*cm" /> -->
 <!--     <zplane rmin="0.*cm" rmax="6.0*cm"    z="-tracking_region_zmax" /> -->
 <!-- </detector>  -->
-
-
-
+</lccdd>
diff --git a/SiD/compact/sidloi3/EcalEndcap.xml b/SiD/compact/sidloi3/EcalEndcap.xml
index 575e2e1fa..3b6beb576 100644
--- a/SiD/compact/sidloi3/EcalEndcap.xml
+++ b/SiD/compact/sidloi3/EcalEndcap.xml
@@ -1,4 +1,4 @@
-<detector id="6" name="EcalEndcap" type="GenericCalEndcap_o1_v01" reflect="true" readout="EcalEndcapHits" vis="EcalEndcapVis" calorimeterType="EM_ENDCAP"gap="0.*cm">
+<detector id="6" name="EcalEndcap" type="GenericCalEndcap_o1_v01" reflect="true" readout="EcalEndcapHits" vis="EcalEndcapVis" calorimeterType="EM_ENDCAP" gap="0.*cm">
   <comment>EM Calorimeter Endcaps</comment>
 
 
@@ -11,7 +11,7 @@
     </shape>
     <rotation x="0*deg" y="0*deg" z="90*deg-180*deg/12"/>
   </envelope>
-  
+
 
 
   <layer repeat="1">
diff --git a/SiD/compact/sidloi3/Support.xml b/SiD/compact/sidloi3/Support.xml
index 67cb683ca..7b734ccd9 100644
--- a/SiD/compact/sidloi3/Support.xml
+++ b/SiD/compact/sidloi3/Support.xml
@@ -1,3 +1,4 @@
+<lccdd>
 <!--  FG: fixme: should be split up into more individual files  ...v-->
 <detector name="VertexBarrelSupports" type="DD4hep_MultiLayerTracker" vis="InvisibleNoDaughters">
   <comment>Double-walled Carbon Fiber support tube</comment>
@@ -368,3 +369,4 @@
 <!--         <slice material="Steel235" thickness="SolenoidEndcapCryostatThickness" /> -->
 <!--     </layer> -->
 <!-- </detector> -->
+</lccdd>
diff --git a/example/sequences.xml b/example/sequences.xml
index 360038951..4c9e0db4c 100644
--- a/example/sequences.xml
+++ b/example/sequences.xml
@@ -3,23 +3,23 @@
 
 
 
-  <!-- Kernel parameters  
-     UI="UI" is default, 
-  
+  <!-- Kernel parameters
+     UI="UI" is default,
+
      Note:
      NumEvents is ignored in interactive sessions, but  used
      in batch mode without ui nor vis.
-  
+
      To run batch: set UI=""
   -->
-  <!--kernel UI="UI" NumEvents="1"/-->  
+  <!--kernel UI="UI" NumEvents="1"/-->
 
-  <kernel UI="" NumEvents="9" />  
+  <kernel UI="" NumEvents="9" />
 
 
-  <!-- List of globally known actions. These actions will be registered with the Geant4Kernel 
+  <!-- List of globally known actions. These actions will be registered with the Geant4Kernel
      object and may be retrieved by there using the action name.
-  
+
      Note: registered actions MUST be unique.
      However, not all actions need to registered....
      Only register those, you later need to retrieve by name.
@@ -60,7 +60,7 @@
      which are explained in the documentation.
      These are typically the "standard" moments: BeginRun, EndRun, BeginEvent, etc.
      and the calls after processing the hits of each sensitive detector.
-  
+
   -->
   <phases>
     <phase type="RunAction/begin">
@@ -84,7 +84,7 @@
      may be shared between many sensitive detectors. Alternatively filters
      may be directly attached to the sensitive detector in question.
      Attributes are directly passed as properties to the filter action.
-  
+
      Note: registered global filters MUST be unique.
      However, not all filters need to registered....
   -->
@@ -114,7 +114,7 @@
      Note: Action sequences exist for each of the various geant4 callback,
      which are explained in the documentation, such as EventAction, RunAction, etc
      and the calls after processing the hits of each sensitive detector.
-  
+
   -->
   <sequences>
     <sequence name="Geant4EventActionSequence/EventAction">
@@ -162,13 +162,13 @@
       <filter name="EnergyDepositMinimumCut/SiTracker"/>
       <action name="TRKSiSD00/FTDCollection"/>
     </sequence>
-    
+
     <sequence sd="SIT" type="Geant4SensDetActionSequence">
       <filter name="GeantinoRejector"/>
       <filter name="EnergyDepositMinimumCut/SiTracker"/>
       <action name="TRKSiSD00/SITCollection"/>
     </sequence>
-    
+
     <sequence sd="TPC" type="Geant4SensDetActionSequence">
       <filter name="GeantinoRejector"/>
       <filter name="EnergyDepositMinimumCut/TPC"/>
@@ -180,7 +180,7 @@
       <filter name="EnergyDepositMinimumCut/SiTracker" />
       <action name="TRKSiSD00/SETCollection"/>
     </sequence>
-    
+
 
 
     <!-- use simple SD for the calorimeters as well until we have -->
@@ -189,8 +189,8 @@
     <!-- SDs with simple segmentations: -->
     <!-- <sequence sd="EcalBarrel" type="Geant4SensDetActionSequence">     <action name="SDCaloLCIO/EcalBarrelCollection">     </action> </sequence> -->
     <!-- <sequence sd="EcalEndcap" type="Geant4SensDetActionSequence">     <action name="SDCaloLCIO/EcalEndcapsCollection">    </action> </sequence> -->
-    <!-- <\!-- <sequence sd="EcalEndcapRing" type="Geant4SensDetActionSequence"> <action name="SDCaloLCIO/EcalEndcapRingCollection"> </action> </sequence> -\-> -->
-    
+    <!-- <sequence sd="EcalEndcapRing" type="Geant4SensDetActionSequence"> <action name="SDCaloLCIO/EcalEndcapRingCollection"> </action> </sequence> -->
+
     <!-- <sequence sd="HcalBarrel"     type="Geant4SensDetActionSequence"> <action name="SDCaloLCIO/HcalBarrelCollection">     </action> </sequence> -->
     <!-- <sequence sd="HcalEndcap"     type="Geant4SensDetActionSequence"> <action name="SDCaloLCIO/HcalEndcapsCollection">    </action> </sequence> -->
     <!-- <sequence sd="HcalEndcapRing" type="Geant4SensDetActionSequence"> <action name="SDCaloLCIO/HcalEndcapRingCollection"> </action> </sequence> -->
@@ -210,12 +210,12 @@
       </action>
     </sequence>
 
-   <sequence sd="EcalECRing" type="Geant4SensDetActionSequence"> 
-      <action name="SDHcalBarrel/EcalEndcapRingCollection"> 
-      <properties cellSize="{1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0 }" 
-                  applyBirksLawFlag="false"/> 
-      </action> 
-    </sequence> 
+   <sequence sd="EcalECRing" type="Geant4SensDetActionSequence">
+      <action name="SDHcalBarrel/EcalEndcapRingCollection">
+      <properties cellSize="{1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0 }"
+                  applyBirksLawFlag="false"/>
+      </action>
+    </sequence>
 
     <sequence sd="HcalBarrel" type="Geant4SensDetActionSequence">
       <action name="SDHcalBarrel/HcalBarrelRegCollection">
@@ -251,6 +251,6 @@
                   applyBirksLawFlag="false"/>
       </action>
     </sequence>
-        
+
   </sequences>
 </geant4_setup>