diff --git a/PlanarMechanics/Sensors/CutForce.mo b/PlanarMechanics/Sensors/CutForce.mo
index 23d26bf..0cf659b 100644
--- a/PlanarMechanics/Sensors/CutForce.mo
+++ b/PlanarMechanics/Sensors/CutForce.mo
@@ -18,9 +18,6 @@ model CutForce "Measure cut force vector"
   input Real N_to_m(unit="N/m") = planarWorld.defaultN_to_m
     "Force arrow scaling (length = force/N_to_m)"
     annotation (Dialog(group="if animation = true", enable=animation));
-  input SI.Diameter forceDiameter = planarWorld.defaultArrowDiameter
-    "Has no longer an effect and is only kept for backwards compatibility (arrow visualization by Vector now)"
-    annotation (Dialog(group="if animation = true", enable=animation));
   input MB.Types.Color forceColor = Modelica.Mechanics.MultiBody.Types.Defaults.ForceColor
     "Color of force arrow"
     annotation (HideResult=true, Dialog(colorSelector=true, group="if animation = true", enable=animation));
diff --git a/PlanarMechanics/Sensors/CutForceAndTorque.mo b/PlanarMechanics/Sensors/CutForceAndTorque.mo
index aa4ba91..257d572 100644
--- a/PlanarMechanics/Sensors/CutForceAndTorque.mo
+++ b/PlanarMechanics/Sensors/CutForceAndTorque.mo
@@ -31,12 +31,6 @@ model CutForceAndTorque "Measure cut force vector and cut torque"
   input Real Nm_to_m(unit="N.m/m") = planarWorld.defaultNm_to_m
     "Torque arrow scaling (length = torque/Nm_to_m)"
     annotation (Dialog(group="if animation = true", enable=animation));
-  input SI.Diameter forceDiameter = planarWorld.defaultArrowDiameter
-    "Has no longer an effect and is only kept for backwards compatibility (arrow visualization by Vector now)"
-    annotation (Dialog(group="if animation = true", enable=animation));
-  input SI.Diameter torqueDiameter = forceDiameter
-    "Has no longer an effect and is only kept for backwards compatibility (arrow visualization by Vector now)"
-    annotation (Dialog(group="if animation = true", enable=animation));
   input MB.Types.Color forceColor = Modelica.Mechanics.MultiBody.Types.Defaults.ForceColor
     "Color of force arrow"
     annotation (HideResult=true, Dialog(colorSelector=true, group="if animation = true", enable=animation));
diff --git a/PlanarMechanics/Sensors/CutTorque.mo b/PlanarMechanics/Sensors/CutTorque.mo
index 796b14e..2eebe26 100644
--- a/PlanarMechanics/Sensors/CutTorque.mo
+++ b/PlanarMechanics/Sensors/CutTorque.mo
@@ -19,9 +19,6 @@ model CutTorque "Measure cut torque"
   input Real Nm_to_m(unit="N.m/m") = planarWorld.defaultNm_to_m
     "Torque arrow scaling (length = torque/Nm_to_m)"
     annotation (Dialog(group="if animation = true", enable=animation));
-  input SI.Diameter torqueDiameter = planarWorld.defaultArrowDiameter
-    "Has no longer an effect and is only kept for backwards compatibility (arrow visualization by Vector now)"
-    annotation (Dialog(group="if animation = true", enable=animation));
   input MB.Types.Color torqueColor = Modelica.Mechanics.MultiBody.Types.Defaults.TorqueColor
     "Color of torque arrow"
     annotation (HideResult=true, Dialog(colorSelector=true, group="if animation = true", enable=animation));
diff --git a/PlanarMechanics/Sources/QuadraticSpeedDependentForce.mo b/PlanarMechanics/Sources/QuadraticSpeedDependentForce.mo
index 56be43f..5da6462 100644
--- a/PlanarMechanics/Sources/QuadraticSpeedDependentForce.mo
+++ b/PlanarMechanics/Sources/QuadraticSpeedDependentForce.mo
@@ -31,9 +31,6 @@ public
     "Torque arrow scaling (length = torque/Nm_to_m)"
     annotation (Dialog(tab="Animation",group="If animation = true", enable=animation));
 
-  input SI.Diameter diameter=planarWorld.defaultArrowDiameter
-    "Has no longer an effect and is only kept for backwards compatibility (arrow visualization by Vector now)"
-    annotation (Dialog(tab="Animation",group="If animation = true", enable=animation));
   parameter SI.Length zPosition = planarWorld.defaultZPosition
     "Position z of cylinder representing the fixed translation" annotation (Dialog(
       tab="Animation",group="If animation = true", enable=animation));
diff --git a/PlanarMechanics/Sources/RelativeForce.mo b/PlanarMechanics/Sources/RelativeForce.mo
index bba6f14..6374d51 100644
--- a/PlanarMechanics/Sources/RelativeForce.mo
+++ b/PlanarMechanics/Sources/RelativeForce.mo
@@ -14,9 +14,6 @@ model RelativeForce "Input signal acting as force and torque on two frames"
     "Torque arrow scaling (length = torque/Nm_to_m)"
     annotation (Dialog(tab="Animation",group="If animation = true", enable=animation));
 
-  input SI.Diameter diameter=planarWorld.defaultArrowDiameter
-    "Has no longer an effect and is only kept for backwards compatibility (arrow visualization by Vector now)"
-    annotation (Dialog(tab="Animation",group="If animation = true", enable=animation));
   parameter SI.Length zPosition = planarWorld.defaultZPosition
     "Position z of cylinder representing the fixed translation"
     annotation (Dialog(tab="Animation",group="If animation = true", enable=animation));
diff --git a/PlanarMechanics/Sources/WorldForce.mo b/PlanarMechanics/Sources/WorldForce.mo
index 040f504..69e992e 100644
--- a/PlanarMechanics/Sources/WorldForce.mo
+++ b/PlanarMechanics/Sources/WorldForce.mo
@@ -16,9 +16,6 @@ model WorldForce
     "Torque arrow scaling (length = torque/Nm_to_m)"
     annotation (Dialog(tab="Animation",group="If animation = true", enable=animation));
 
-  input SI.Diameter diameter = planarWorld.defaultArrowDiameter
-    "Has no longer an effect and is only kept for backwards compatibility (arrow visualization by Vector now)"
-    annotation (Dialog(tab="Animation",group="If animation = true", enable=animation));
   parameter SI.Length zPosition = planarWorld.defaultZPosition
     "Position z of cylinder representing the fixed translation"
     annotation (Dialog(tab="Animation",group="If animation = true", enable=animation));
diff --git a/PlanarMechanics/UsersGuide/ReleaseNotes.mo b/PlanarMechanics/UsersGuide/ReleaseNotes.mo
index bcfc418..1d97343 100644
--- a/PlanarMechanics/UsersGuide/ReleaseNotes.mo
+++ b/PlanarMechanics/UsersGuide/ReleaseNotes.mo
@@ -5,6 +5,47 @@ class ReleaseNotes "Release notes"
   annotation (
     Documentation(
       info="<html>
+<h4>Version 2.0.0, 2024-mm-dd</h4>
+<p>
+This version requires the <strong>Modelica&nbsp;4.0.0</strong> Library.
+It is backwards compatible to previous library versions.
+</p>
+
+<p>New components:</p>
+<ul>
+  <li>
+    ...
+  </li>
+</ul>
+
+<p>Deleted parameters:</p>
+<ul>
+  <li>
+    <a href=\"modelica://PlanarMechanics.Sources.RelativeForce\">Sources.RelativeForce</a>:
+    diameter
+  </li>
+  <li>
+    <a href=\"modelica://PlanarMechanics.Sources.WorldForce\">Sources.WorldForce</a>:
+    diameter
+  </li>
+  <li>
+    <a href=\"modelica://PlanarMechanics.Sources.QuadraticSpeedDependentForce\">Sources.QuadraticSpeedDependentForce</a>:
+    diameter
+  </li>
+  <li>
+    <a href=\"modelica://PlanarMechanics.Sensors.CutForce\">Sensors.CutForce</a>:
+    forceDiameter
+  </li>
+  <li>
+    <a href=\"modelica://PlanarMechanics.Sensors.CutForceAndTorque\">Sensors.CutForceAndTorque</a>:
+    forceDiameter, torqueDiameter
+  </li>
+  <li>
+    <a href=\"modelica://PlanarMechanics.Sensors.CutTorque\">Sensors.CutTorque</a>:
+    torqueDiameter
+  </li>
+</ul>
+
 <h4>Version 1.6.0, 2023-09-12</h4>
 <p>
 This version requires the <strong>Modelica&nbsp;4.0.0</strong> Library.