diff --git a/Finite_element_analysis/Snippets/Lesson1/Model/JointsAndDrivers.any b/Finite_element_analysis/Snippets/Lesson1/Model/JointsAndDrivers.any
index fad97b57..c793ac67 100644
--- a/Finite_element_analysis/Snippets/Lesson1/Model/JointsAndDrivers.any
+++ b/Finite_element_analysis/Snippets/Lesson1/Model/JointsAndDrivers.any
@@ -140,9 +140,9 @@ AnyFolder Drivers = {
     AnyKinLinear AnklePos = {
       AnyFixedRefFrame &Ground = Main.Model.EnvironmentModel.GlobalRef;
       #if BM_LEG_MODEL == _LEG_MODEL_LEG_
-        AnyRefNode &Ankle = ..LegR.Seg.Foot.AnkleJoint;
+        AnyRefNode &Ankle = ..LegR.Segments.Foot.AnkleJoint;
       #else
-        AnyRefNode &Ankle = ..LegR.Seg.Talus.AnkleJoint;      
+        AnyRefNode &Ankle = ..LegR.Segments.Talus.AnkleJoint;      
       #endif
     };
     MeasureOrganizer = {0};  // Only the x coordinate
@@ -155,9 +155,9 @@ AnyFolder Drivers = {
     AnyKinLinear AnklePos = {
       AnyFixedRefFrame &Ground = Main.Model.EnvironmentModel.GlobalRef;
       #if BM_LEG_MODEL == _LEG_MODEL_LEG_
-        AnyRefNode &Ankle = ..LegL.Seg.Foot.AnkleJoint;
+        AnyRefNode &Ankle = ..LegL.Segments.Foot.AnkleJoint;
       #else
-        AnyRefNode &Ankle = ..LegL.Seg.Talus.AnkleJoint;      
+        AnyRefNode &Ankle = ..LegL.Segments.Talus.AnkleJoint;      
       #endif
     };
     MeasureOrganizer = {0};  // Only the x coordinate
@@ -182,8 +182,8 @@ AnyFolder Drivers = {
   AnyKinEqSimpleDriver FeetXDriver = {
     AnyKinCoM CoM = {
       RefFrames = arrcat(
-        ObjSearch("Main.Model.BodyModel.*.Leg.Seg.Foot","AnySeg"),
-        ObjSearch("Main.Model.BodyModel.*.Leg.Seg.Foot.*","AnySeg")
+        ObjSearch("Main.Model.BodyModel.*.Leg.Segments.Foot","AnySeg"),
+        ObjSearch("Main.Model.BodyModel.*.Leg.Segments.Foot.*","AnySeg")
       );
     };
     MeasureOrganizer = {2};  // Only the z direction
@@ -396,7 +396,7 @@ AnyFolder Drivers = {
   AnyKinEq RToeGroundConstraint ={
     AnyKinLinear ToePos = {
       AnyFixedRefFrame &Ground = Main.Model.EnvironmentModel.GlobalRef;
-      AnyRefNode &Ball = Main.Model.BodyModel.Right.Leg.Seg.Foot.Metatarsal1.ToeJoint;
+      AnyRefNode &Ball = Main.Model.BodyModel.Right.Leg.Segments.Foot.Metatarsal1.ToeJoint;
     };
     MeasureOrganizer = {1};  // Only the y coordinate
     Reaction.Type={Off};
@@ -405,7 +405,7 @@ AnyFolder Drivers = {
   AnyKinEqSimpleDriver RHeelGroundConstraint ={
     AnyKinLinear HeelPos = {
       AnyFixedRefFrame &Ground = Main.Model.EnvironmentModel.GlobalRef;
-      AnyRefNode &Ball = Main.Model.BodyModel.Right.Leg.Seg.Foot.Calcaneus.HeelContactNodeLow;
+      AnyRefNode &Ball = Main.Model.BodyModel.Right.Leg.Segments.Foot.Calcaneus.HeelContactNodeLow;
     };
     MeasureOrganizer = {1};  // Only the y coordinate
     DriverPos = {0.0};
@@ -417,7 +417,7 @@ AnyFolder Drivers = {
   AnyKinEq LToeGroundConstraint ={
     AnyKinLinear ToePos = {
       AnyFixedRefFrame &Ground = Main.Model.EnvironmentModel.GlobalRef;
-      AnyRefNode &Ball = Main.Model.BodyModel.Left.Leg.Seg.Foot.Metatarsal1.ToeJoint;
+      AnyRefNode &Ball = Main.Model.BodyModel.Left.Leg.Segments.Foot.Metatarsal1.ToeJoint;
     };
     MeasureOrganizer = {1};  // Only the y coordinate
     Reaction.Type={Off};
@@ -426,7 +426,7 @@ AnyFolder Drivers = {
   AnyKinEqSimpleDriver LHeelGroundConstraint ={
     AnyKinLinear HeelPos = {
       AnyFixedRefFrame &Ground = Main.Model.EnvironmentModel.GlobalRef;
-      AnyRefNode &Ball = Main.Model.BodyModel.Left.Leg.Seg.Foot.Calcaneus.HeelContactNodeLow;
+      AnyRefNode &Ball = Main.Model.BodyModel.Left.Leg.Segments.Foot.Calcaneus.HeelContactNodeLow;
     };
     MeasureOrganizer = {1};  // Only the y coordinate
     DriverPos = {0.0};
@@ -458,7 +458,7 @@ AnyFolder Drivers = {
     
     ConditionalContactFootPlaneClass LeftFootSupport (
     BaseObject = Main.Model.EnvironmentModel.GlobalRef,
-    Foot = ..LegL.Seg.Foot,
+    Foot = ..LegL.Segments.Foot,
     DisplayTriggerVolume = 1,
     DisplayTargetNode =1
     ) = {
@@ -475,7 +475,7 @@ AnyFolder Drivers = {
     
     ConditionalContactFootPlaneClass RightFootSupport (
     BaseObject = Main.Model.EnvironmentModel.GlobalRef,
-    Foot = ..LegR.Seg.Foot,
+    Foot = ..LegR.Segments.Foot,
     DisplayTriggerVolume = 0,
     DisplayTargetNode =1
     ) = {