VOID_Tools: Remove an annoying warning with superfluous compiler directives.
VOID_Tools: Remove an annoying warning with superfluous compiler directives.

--- a/Properties/AssemblyInfo.cs
+++ b/Properties/AssemblyInfo.cs
@@ -39,7 +39,7 @@
 // The assembly version has the format "{Major}.{Minor}.{Build}.{Revision}".
 // The form "{Major}.{Minor}.*" will automatically update the build and revision,
 // and "{Major}.{Minor}.{Build}.*" will update just the revision.
-[assembly: AssemblyVersion("0.12.0.*")]
+[assembly: AssemblyVersion("0.13.*")]
 // The following attributes are used to specify the signing key for the assembly,
 // if desired. See the Mono documentation for more information about signing.
 //[assembly: AssemblyDelaySign(false)]

--- a/VOID.csproj
+++ b/VOID.csproj
@@ -95,6 +95,7 @@
     <Compile Include="VOID_Localization.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="VOID_HUDAdvanced.cs" />
+    <Compile Include="VOID_TWR.cs" />
   </ItemGroup>
   <ProjectExtensions>
     <MonoDevelop>

--- a/VOID_CBInfoBrowser.cs
+++ b/VOID_CBInfoBrowser.cs
@@ -72,20 +72,20 @@
 
 			GUILayout.BeginVertical(GUILayout.Width(150));
 
-			selectedBody1 = VOID_Core.Instance.allBodies[selectedBodyIdx1];
-			selectedBody2 = VOID_Core.Instance.allBodies[selectedBodyIdx2];
+			selectedBody1 = this.core.allBodies[selectedBodyIdx1];
+			selectedBody2 = this.core.allBodies[selectedBodyIdx2];
 
 			GUILayout.BeginHorizontal(GUILayout.ExpandWidth(true));
 			if (GUILayout.Button("<", GUILayout.ExpandWidth(false)))
 			{
 				selectedBodyIdx1--;
-				if (selectedBodyIdx1 < 0) selectedBodyIdx1 = VOID_Core.Instance.allBodies.Count - 1;
-			}
-			GUILayout.Label(VOID_Core.Instance.allBodies[selectedBodyIdx1].bodyName, VOID_Core.Instance.LabelStyles["center_bold"], GUILayout.ExpandWidth(true));
+				if (selectedBodyIdx1 < 0) selectedBodyIdx1 = this.core.allBodies.Count - 1;
+			}
+			GUILayout.Label(this.core.allBodies[selectedBodyIdx1].bodyName, this.core.LabelStyles["center_bold"], GUILayout.ExpandWidth(true));
 			if (GUILayout.Button(">", GUILayout.ExpandWidth(false)))
 			{
 				selectedBodyIdx1++;
-				if (selectedBodyIdx1 > VOID_Core.Instance.allBodies.Count - 1) selectedBodyIdx1 = 0;
+				if (selectedBodyIdx1 > this.core.allBodies.Count - 1) selectedBodyIdx1 = 0;
 			}
 			GUILayout.EndHorizontal();
 			GUILayout.EndVertical();
@@ -95,13 +95,13 @@
 			if (GUILayout.Button("<", GUILayout.ExpandWidth(false)))
 			{
 				selectedBodyIdx2--;
-				if (selectedBodyIdx2 < 0) selectedBodyIdx2 = VOID_Core.Instance.allBodies.Count - 1;
-			}
-			GUILayout.Label(VOID_Core.Instance.allBodies[selectedBodyIdx2].bodyName, VOID_Core.Instance.LabelStyles["center_bold"], GUILayout.ExpandWidth(true));
+				if (selectedBodyIdx2 < 0) selectedBodyIdx2 = this.core.allBodies.Count - 1;
+			}
+			GUILayout.Label(this.core.allBodies[selectedBodyIdx2].bodyName, this.core.LabelStyles["center_bold"], GUILayout.ExpandWidth(true));
 			if (GUILayout.Button(">", GUILayout.ExpandWidth(false)))
 			{
 				selectedBodyIdx2++;
-				if (selectedBodyIdx2 > VOID_Core.Instance.allBodies.Count - 1) selectedBodyIdx2 = 0;
+				if (selectedBodyIdx2 > this.core.allBodies.Count - 1) selectedBodyIdx2 = 0;
 			}
 			GUILayout.EndHorizontal();
 			GUILayout.EndVertical();
@@ -213,82 +213,82 @@
 
 		private void body_OP_show_orbital_info(CelestialBody body)
 		{
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-		    else GUILayout.Label((body.orbit.ApA / 1000).ToString("##,#") + "km", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-		    else GUILayout.Label(VOID_Tools.ConvertInterval(body.orbit.timeToAp), VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-		    else GUILayout.Label((body.orbit.PeA / 1000).ToString("##,#") + "km", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-		    else GUILayout.Label(VOID_Tools.ConvertInterval(body.orbit.timeToPe), VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-		    else GUILayout.Label((body.orbit.semiMajorAxis / 1000).ToString("##,#") + "km", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-		    else GUILayout.Label(body.orbit.eccentricity.ToString("F4") + "", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-		    else GUILayout.Label(VOID_Tools.ConvertInterval(body.orbit.period), VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-		    else GUILayout.Label(VOID_Tools.ConvertInterval(body.rotationPeriod), VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-		    else GUILayout.Label((body.orbit.orbitalSpeed / 1000).ToString("F2") + "km/s", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    else GUILayout.Label((body.orbit.ApA / 1000).ToString("##,#") + "km", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    else GUILayout.Label(VOID_Tools.ConvertInterval(body.orbit.timeToAp), this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    else GUILayout.Label((body.orbit.PeA / 1000).ToString("##,#") + "km", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    else GUILayout.Label(VOID_Tools.ConvertInterval(body.orbit.timeToPe), this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    else GUILayout.Label((body.orbit.semiMajorAxis / 1000).ToString("##,#") + "km", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    else GUILayout.Label(body.orbit.eccentricity.ToString("F4") + "", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    else GUILayout.Label(VOID_Tools.ConvertInterval(body.orbit.period), this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    else GUILayout.Label(VOID_Tools.ConvertInterval(body.rotationPeriod), this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    else GUILayout.Label((body.orbit.orbitalSpeed / 1000).ToString("F2") + "km/s", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
 
 			// Toadicus edit: convert mean anomaly into degrees.
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-		    else GUILayout.Label((body.orbit.meanAnomaly * 180d / Math.PI).ToString("F3") + "°", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-		    else GUILayout.Label(body.orbit.trueAnomaly.ToString("F3") + "°", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    else GUILayout.Label((body.orbit.meanAnomaly * 180d / Math.PI).ToString("F3") + "°", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    else GUILayout.Label(body.orbit.trueAnomaly.ToString("F3") + "°", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
 
 			// Toadicus edit: convert eccentric anomaly into degrees.
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-		    else GUILayout.Label((body.orbit.eccentricAnomaly * 180d / Math.PI).ToString("F3") + "°", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-		    else GUILayout.Label(body.orbit.inclination.ToString("F3") + "°", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-		    else GUILayout.Label(body.orbit.LAN.ToString("F3") + "°", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-		    else GUILayout.Label(body.orbit.argumentOfPeriapsis.ToString("F3") + "°", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-		    if (body.bodyName == "Sun") GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    else GUILayout.Label((body.orbit.eccentricAnomaly * 180d / Math.PI).ToString("F3") + "°", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    else GUILayout.Label(body.orbit.inclination.ToString("F3") + "°", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    else GUILayout.Label(body.orbit.LAN.ToString("F3") + "°", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		    else GUILayout.Label(body.orbit.argumentOfPeriapsis.ToString("F3") + "°", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+		    if (body.bodyName == "Sun") GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
 		    else
 		    {
 		        string body_tidally_locked = "No";
 		        if (body.tidallyLocked) body_tidally_locked = "Yes";
-		        GUILayout.Label(body_tidally_locked, VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
+		        GUILayout.Label(body_tidally_locked, this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
 		    }
 		}
 
 		private void body_OP_show_physical_info(CelestialBody body)
 		{
 
-			GUILayout.Label((body.Radius / 1000).ToString("##,#") + "km", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-			GUILayout.Label((((body.Radius * body.Radius) * 4 * Math.PI) / 1000).ToString("0.00e+00") + "km²", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
+			GUILayout.Label((body.Radius / 1000).ToString("##,#") + "km", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+			GUILayout.Label((((body.Radius * body.Radius) * 4 * Math.PI) / 1000).ToString("0.00e+00") + "km²", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
 
 			// divide by 1000 to convert m to km
-			GUILayout.Label((((4d / 3) * Math.PI * (body.Radius * body.Radius * body.Radius)) / 1000).ToString("0.00e+00") + "km³", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-			GUILayout.Label(body.Mass.ToString("0.00e+00") + "kg", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
+			GUILayout.Label((((4d / 3) * Math.PI * (body.Radius * body.Radius * body.Radius)) / 1000).ToString("0.00e+00") + "km³", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+			GUILayout.Label(body.Mass.ToString("0.00e+00") + "kg", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
 
 			double p = body.Mass / ((body.Radius * body.Radius * body.Radius) * (4d / 3) * Math.PI);
 
-			GUILayout.Label(p.ToString("##,#") + "kg/m³", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-			if (body.bodyName == "Sun") GUILayout.Label(Tools.MuMech_ToSI(body.sphereOfInfluence), VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-			else GUILayout.Label(Tools.MuMech_ToSI(body.sphereOfInfluence), VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-
-			GUILayout.Label(body.orbitingBodies.Count.ToString(), VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
+			GUILayout.Label(p.ToString("##,#") + "kg/m³", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+			if (body.bodyName == "Sun") GUILayout.Label(Tools.MuMech_ToSI(body.sphereOfInfluence), this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+			else GUILayout.Label(Tools.MuMech_ToSI(body.sphereOfInfluence), this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+
+			GUILayout.Label(body.orbitingBodies.Count.ToString(), this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
 
 			//show # artificial satellites
 			int num_art_sats = 0;
@@ -297,31 +297,31 @@
 				if (v.mainBody == body && v.situation.ToString() == "ORBITING") num_art_sats++;
 			}
 
-			GUILayout.Label(num_art_sats.ToString(), VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
+			GUILayout.Label(num_art_sats.ToString(), this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
 
 			double g_ASL = (VOID_Core.Constant_G * body.Mass) / (body.Radius * body.Radius);
 
-			GUILayout.Label(Tools.MuMech_ToSI(g_ASL) + "m/s²", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
+			GUILayout.Label(Tools.MuMech_ToSI(g_ASL) + "m/s²", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
 
 			if (body.atmosphere)
 			{
 				GUILayout.Label("≈ " + Tools.MuMech_ToSI(body.maxAtmosphereAltitude) + "m",
-					VOID_Core.Instance.LabelStyles["right"],
+					this.core.LabelStyles["right"],
 					GUILayout.ExpandWidth(true));
 
 				string O2 = "No";
 				if (body.atmosphereContainsOxygen == true) O2 = "Yes";
-				GUILayout.Label(O2, VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
+				GUILayout.Label(O2, this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
 			}
 			else
 			{
-				GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
-				GUILayout.Label("N/A", VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
+				GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
+				GUILayout.Label("N/A", this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
 			}
 
 			string ocean = "No";
 			if (body.ocean == true) ocean = "Yes";
-			GUILayout.Label(ocean, VOID_Core.Instance.LabelStyles["right"], GUILayout.ExpandWidth(true));
+			GUILayout.Label(ocean, this.core.LabelStyles["right"], GUILayout.ExpandWidth(true));
 		}
 	}
 }

--- a/VOID_Core.cs
+++ b/VOID_Core.cs
@@ -75,7 +75,7 @@
 		}
 		#endregion
 
-		public static double Constant_G = 6.674e-11;
+		public static readonly double Constant_G = 6.674e-11;
 
 		/*
 		 * Fields
@@ -384,7 +384,7 @@
 				_mainWindowPos = GUILayout.Window(
 					this.windowID,
 					_mainWindowPos,
-					this.VOIDMainWindow,
+					VOID_Tools.GetWindowHandler(this.VOIDMainWindow),
 					string.Join(" ", new string[] { this.VoidName, this.VoidVersion }),
 					GUILayout.Width(250),
 					GUILayout.Height(50)
@@ -405,7 +405,7 @@
 				_configWindowPos = GUILayout.Window(
 					this.windowID,
 					_configWindowPos,
-					this.VOIDConfigWindow,
+					VOID_Tools.GetWindowHandler(this.VOIDConfigWindow),
 					string.Join(" ", new string[] { this.VoidName, "Configuration" }),
 					GUILayout.Width(250),
 					GUILayout.Height(50)
@@ -480,8 +480,8 @@
 
 			if (this.vessel != null && this.vesselSimActive)
 			{
-				double radius = VOID_Core.Instance.vessel.Radius();
-				SimManager.Gravity = VOID_Core.Instance.vessel.mainBody.gravParameter /
+				double radius = this.vessel.Radius();
+				SimManager.Gravity = this.vessel.mainBody.gravParameter /
 					(radius * radius);
 				SimManager.TryStartSimulation();
 			}
@@ -1030,7 +1030,14 @@
 		{
 			get
 			{
-				return VOID_Core.Instance;
+				if (HighLogic.LoadedSceneIsEditor)
+				{
+					return VOID_EditorCore.Instance;
+				}
+				else
+				{
+					return VOID_Core.Instance;
+				}
 			}
 		}
 

--- a/VOID_DataValue.cs
+++ b/VOID_DataValue.cs
@@ -70,6 +70,7 @@
 			get
 			{
 				if (
+					HighLogic.LoadedSceneIsEditor ||
 					(VOID_Core.Instance.updateTimer - this.lastUpdate > VOID_Core.Instance.updatePeriod) ||
 					(this.lastUpdate > VOID_Core.Instance.updateTimer)
 				)

--- a/VOID_HUD.cs
+++ b/VOID_HUD.cs
@@ -118,9 +118,9 @@
 
 			leftHUD = new StringBuilder();
 
-			VOID_Core.Instance.LabelStyles["hud"].alignment = TextAnchor.UpperRight;
-
-			if (VOID_Core.Instance.powerAvailable)
+			this.core.LabelStyles["hud"].alignment = TextAnchor.UpperRight;
+
+			if (this.core.powerAvailable)
 			{
 				leftHUD.AppendFormat("Primary: {0} Inc: {1}",
 					VOID_Data.primaryName.ValueUnitString(),
@@ -145,11 +145,11 @@
 			}
 			else
 			{
-				VOID_Core.Instance.LabelStyles["hud"].normal.textColor = Color.red;
+				this.core.LabelStyles["hud"].normal.textColor = Color.red;
 				leftHUD.Append(string.Intern("-- POWER LOST --"));
 			}
 
-			GUILayout.Label(leftHUD.ToString(), VOID_Core.Instance.LabelStyles["hud"], GUILayout.ExpandWidth(true));
+			GUILayout.Label(leftHUD.ToString(), this.core.LabelStyles["hud"], GUILayout.ExpandWidth(true));
 
 			if (!this.positionsLocked)
 			{
@@ -165,9 +165,9 @@
 
 			rightHUD = new StringBuilder();
 
-			VOID_Core.Instance.LabelStyles["hud"].alignment = TextAnchor.UpperLeft;
-
-			if (VOID_Core.Instance.powerAvailable)
+			this.core.LabelStyles["hud"].alignment = TextAnchor.UpperLeft;
+
+			if (this.core.powerAvailable)
 			{
 				rightHUD.AppendFormat("Biome: {0} Sit: {1}",
 					VOID_Data.currBiome.ValueUnitString(),
@@ -192,12 +192,12 @@
 			}
 			else
 			{
-				VOID_Core.Instance.LabelStyles["hud"].normal.textColor = Color.red;
+				this.core.LabelStyles["hud"].normal.textColor = Color.red;
 				rightHUD.Append(string.Intern("-- POWER LOST --"));
 			}
 
 
-			GUILayout.Label(rightHUD.ToString(), VOID_Core.Instance.LabelStyles["hud"], GUILayout.ExpandWidth(true));
+			GUILayout.Label(rightHUD.ToString(), this.core.LabelStyles["hud"], GUILayout.ExpandWidth(true));
 
 			if (!this.positionsLocked)
 			{
@@ -209,12 +209,12 @@
 
 		public override void DrawGUI()
 		{
-			if (!VOID_Core.Instance.LabelStyles.ContainsKey("hud"))
-			{
-				VOID_Core.Instance.LabelStyles["hud"] = new GUIStyle(GUI.skin.label);
-			}
-
-			VOID_Core.Instance.LabelStyles["hud"].normal.textColor = textColors [ColorIndex];
+			if (!this.core.LabelStyles.ContainsKey("hud"))
+			{
+				this.core.LabelStyles["hud"] = new GUIStyle(GUI.skin.label);
+			}
+
+			this.core.LabelStyles["hud"].normal.textColor = textColors [ColorIndex];
 
 			if ((TimeWarp.WarpMode == TimeWarp.Modes.LOW) || (TimeWarp.CurrentRate <= TimeWarp.MaxPhysicsRate))
 			{
@@ -222,7 +222,7 @@
 			}
 
 			this.leftHUDPos.value = GUI.Window(
-				VOID_Core.Instance.windowID,
+				this.core.windowID,
 				this.leftHUDPos,
 				this.leftHUDWindow,
 				GUIContent.none,
@@ -230,7 +230,7 @@
 			);
 
 			this.rightHUDPos.value = GUI.Window(
-				VOID_Core.Instance.windowID,
+				this.core.windowID,
 				this.rightHUDPos,
 				this.rightHUDWindow,
 				GUIContent.none,
@@ -261,7 +261,7 @@
 	{
 		public static readonly VOID_StrValue expSituation = new VOID_StrValue(
 			"Situation",
-			new Func<string> (() => VOID_Core.Instance.vessel.GetExperimentSituation().HumanString())
+			new Func<string> (() => core.vessel.GetExperimentSituation().HumanString())
 		);
 
 		public static readonly VOID_DoubleValue vesselPitch = new VOID_DoubleValue(

--- a/VOID_HUDAdvanced.cs
+++ b/VOID_HUDAdvanced.cs
@@ -105,9 +105,9 @@
 
 			leftHUD = new StringBuilder();
 
-			VOID_Core.Instance.LabelStyles["hud"].alignment = TextAnchor.UpperRight;
-
-			if (VOID_Core.Instance.powerAvailable)
+			this.core.LabelStyles["hud"].alignment = TextAnchor.UpperRight;
+
+			if (this.core.powerAvailable)
 			{
 				leftHUD.AppendFormat(
 					string.Intern("Mass: {0}\n"),
@@ -144,11 +144,11 @@
 			}
 			else
 			{
-				VOID_Core.Instance.LabelStyles["hud"].normal.textColor = Color.red;
+				this.core.LabelStyles["hud"].normal.textColor = Color.red;
 				leftHUD.Append(string.Intern("-- POWER LOST --"));
 			}
 
-			GUILayout.Label(leftHUD.ToString(), VOID_Core.Instance.LabelStyles["hud"], GUILayout.ExpandWidth(true));
+			GUILayout.Label(leftHUD.ToString(), this.core.LabelStyles["hud"], GUILayout.ExpandWidth(true));
 
 			if (!this.positionsLocked)
 			{
@@ -164,9 +164,9 @@
 
 			rightHUD = new StringBuilder();
 
-			VOID_Core.Instance.LabelStyles["hud"].alignment = TextAnchor.UpperLeft;
-
-			if (VOID_Core.Instance.powerAvailable)
+			this.core.LabelStyles["hud"].alignment = TextAnchor.UpperLeft;
+
+			if (this.core.powerAvailable)
 			{
 				rightHUD.AppendFormat(
 					"Burn Δv (Rem/Tot): {0} / {1}\n",
@@ -203,11 +203,11 @@
 			}
 			else
 			{
-				VOID_Core.Instance.LabelStyles["hud"].normal.textColor = Color.red;
+				this.core.LabelStyles["hud"].normal.textColor = Color.red;
 				rightHUD.Append(string.Intern("-- POWER LOST --"));
 			}
 
-			GUILayout.Label(rightHUD.ToString(), VOID_Core.Instance.LabelStyles["hud"], GUILayout.ExpandWidth(true));
+			GUILayout.Label(rightHUD.ToString(), this.core.LabelStyles["hud"], GUILayout.ExpandWidth(true));
 
 			if (!this.positionsLocked)
 			{
@@ -221,7 +221,7 @@
 		{
 			if (this.primaryHUD == null)
 			{
-				foreach (IVOID_Module module in VOID_Core.Instance.Modules)
+				foreach (IVOID_Module module in this.core.Modules)
 				{
 					if (module is VOID_HUD)
 					{
@@ -237,7 +237,7 @@
 				}
 
 				this.leftHUDPos.value = GUI.Window(
-					VOID_Core.Instance.windowID,
+					this.core.windowID,
 					this.leftHUDPos,
 					VOID_Tools.GetWindowHandler(this.leftHUDWindow),
 					GUIContent.none,
@@ -247,7 +247,7 @@
 				if (VOID_Data.upcomingManeuverNodes > 0)
 				{
 					this.rightHUDPos.value = GUI.Window(
-						VOID_Core.Instance.windowID,
+						this.core.windowID,
 						this.rightHUDPos,
 						VOID_Tools.GetWindowHandler(this.rightHUDWindow),
 						GUIContent.none,
@@ -378,7 +378,7 @@
 		public static readonly VOID_DoubleValue vesselAccel = new VOID_DoubleValue(
 			"Acceleration",
 			() => geeForce * KerbinGee,
-			"m/s"
+			"m/s²"
 		);
 
 		public static readonly VOID_IntValue vesselCrewCount = new VOID_IntValue(
@@ -589,6 +589,11 @@
 			}
 
 			double interval = (node.UT - currentNodeBurnDuration) - Planetarium.GetUniversalTime();
+
+			if (double.IsNaN(interval))
+			{
+				return string.Intern("NaN");
+			}
 
 			int sign = Math.Sign(interval);
 			interval = Math.Abs(interval);

--- a/VOID_Module.cs
+++ b/VOID_Module.cs
@@ -55,6 +55,11 @@
 		{
 			get
 			{
+				if (HighLogic.LoadedSceneIsEditor)
+				{
+					return VOID_EditorCore.Instance as VOID_Core;
+				}
+
 				return VOID_Core.Instance;
 			}
 		}
@@ -218,17 +223,15 @@
 
 		public override void DrawGUI()
 		{
-			GUI.skin = VOID_Core.Instance.Skin;
+			GUI.skin = this.core.Skin;
 
 			Rect _Pos = this.WindowPos;
 
 			_Pos = GUILayout.Window(
-				VOID_Core.Instance.windowID,
+				this.core.windowID,
 				_Pos,
-				this.ModuleWindow,
-				this.Name,
-				GUILayout.Width(this.defWidth),
-				GUILayout.Height(this.defHeight)
+				VOID_Tools.GetWindowHandler(this.ModuleWindow),
+				this.Name
 			);
 
 			_Pos = Tools.ClampRectToScreen (_Pos);
@@ -236,7 +239,7 @@
 			if (_Pos != this.WindowPos)
 			{
 				this.WindowPos = _Pos;
-				VOID_Core.Instance.configDirty = true;
+				this.core.configDirty = true;
 			}
 		}
 	}

--- a/VOID_Orbital.cs
+++ b/VOID_Orbital.cs
@@ -129,51 +129,51 @@
 			VOID_Localization.void_primary,
 			delegate()
 		{
-			if (VOID_Core.Instance.vessel == null)
+			if (core.vessel == null)
 			{
 				return string.Empty;
 			}
-			return VOID_Core.Instance.vessel.mainBody.name;
+			return core.vessel.mainBody.name;
 		}
 		);
 
 		public static readonly VOID_DoubleValue orbitAltitude = new VOID_DoubleValue (
 			"Altitude (ASL)",
-			new Func<double> (() => VOID_Core.Instance.vessel.orbit.altitude),
+			new Func<double> (() => core.vessel.orbit.altitude),
 			"m"
 		);
 
 		public static readonly VOID_DoubleValue orbitVelocity = new VOID_DoubleValue (
 			VOID_Localization.void_velocity,
-			new Func<double> (() => VOID_Core.Instance.vessel.orbit.vel.magnitude),
+			new Func<double> (() => core.vessel.orbit.vel.magnitude),
 			"m/s"
 		);
 
 		public static readonly VOID_DoubleValue orbitApoAlt = new VOID_DoubleValue(
 			VOID_Localization.void_apoapsis,
-			new Func<double>(() => VOID_Core.Instance.vessel.orbit.ApA),
+			new Func<double>(() => core.vessel.orbit.ApA),
 			"m"
 		);
 
 		public static readonly VOID_DoubleValue oribtPeriAlt = new VOID_DoubleValue(
 			VOID_Localization.void_periapsis,
-			new Func<double>(() => VOID_Core.Instance.vessel.orbit.PeA),
+			new Func<double>(() => core.vessel.orbit.PeA),
 			"m"
 		);
 
 		public static readonly VOID_StrValue timeToApo = new VOID_StrValue(
 			"Time to Apoapsis",
-			new Func<string>(() => VOID_Tools.ConvertInterval(VOID_Core.Instance.vessel.orbit.timeToAp))
+			new Func<string>(() => VOID_Tools.ConvertInterval(core.vessel.orbit.timeToAp))
 		);
 
 		public static readonly VOID_StrValue timeToPeri = new VOID_StrValue(
 			"Time to Periapsis",
-			new Func<string>(() => VOID_Tools.ConvertInterval(VOID_Core.Instance.vessel.orbit.timeToPe))
+			new Func<string>(() => VOID_Tools.ConvertInterval(core.vessel.orbit.timeToPe))
 		);
 
 		public static readonly VOID_DoubleValue orbitInclination = new VOID_DoubleValue(
 			"Inclination",
-			new Func<double>(() => VOID_Core.Instance.vessel.orbit.inclination),
+			new Func<double>(() => core.vessel.orbit.inclination),
 			"°"
 		);
 
@@ -181,9 +181,9 @@
 			"Gravity",
 			delegate()
 		{
-			double orbitRadius = VOID_Core.Instance.vessel.mainBody.Radius +
-				VOID_Core.Instance.vessel.mainBody.GetAltitude(VOID_Core.Instance.vessel.findWorldCenterOfMass());
-			return (VOID_Core.Constant_G * VOID_Core.Instance.vessel.mainBody.Mass) /
+			double orbitRadius = core.vessel.mainBody.Radius +
+				core.vessel.mainBody.GetAltitude(core.vessel.findWorldCenterOfMass());
+			return (VOID_Core.Constant_G * core.vessel.mainBody.Mass) /
 				(orbitRadius * orbitRadius);
 		},
 			"m/s²"
@@ -191,55 +191,55 @@
 
 		public static readonly VOID_StrValue orbitPeriod = new VOID_StrValue(
 			"Period",
-			new Func<string>(() => VOID_Tools.ConvertInterval(VOID_Core.Instance.vessel.orbit.period))
+			new Func<string>(() => VOID_Tools.ConvertInterval(core.vessel.orbit.period))
 		);
 
 		public static readonly VOID_DoubleValue semiMajorAxis = new VOID_DoubleValue(
 			"Semi-Major Axis",
-			new Func<double>(() => VOID_Core.Instance.vessel.orbit.semiMajorAxis),
+			new Func<double>(() => core.vessel.orbit.semiMajorAxis),
 			"m"
 		);
 
 		public static readonly VOID_DoubleValue eccentricity = new VOID_DoubleValue(
 			"Eccentricity",
-			new Func<double>(() => VOID_Core.Instance.vessel.orbit.eccentricity),
+			new Func<double>(() => core.vessel.orbit.eccentricity),
 			""
 		);
 
 		public static readonly VOID_DoubleValue meanAnomaly = new VOID_DoubleValue(
 			"Mean Anomaly",
-			new Func<double>(() => VOID_Core.Instance.vessel.orbit.meanAnomaly * 180d / Math.PI),
+			new Func<double>(() => core.vessel.orbit.meanAnomaly * 180d / Math.PI),
 			"°"
 		);
 
 		public static readonly VOID_DoubleValue trueAnomaly = new VOID_DoubleValue(
 			"True Anomaly",
-			new Func<double>(() => VOID_Core.Instance.vessel.orbit.trueAnomaly),
+			new Func<double>(() => core.vessel.orbit.trueAnomaly),
 			"°"
 		);
 
 		public static readonly VOID_DoubleValue eccAnomaly = new VOID_DoubleValue(
 			"Eccentric Anomaly",
-			new Func<double>(() => VOID_Core.Instance.vessel.orbit.eccentricAnomaly * 180d / Math.PI),
+			new Func<double>(() => core.vessel.orbit.eccentricAnomaly * 180d / Math.PI),
 			"°"
 		);
 
 		public static readonly VOID_DoubleValue longitudeAscNode = new VOID_DoubleValue(
 			"Long. Ascending Node",
-			new Func<double>(() => VOID_Core.Instance.vessel.orbit.LAN),
+			new Func<double>(() => core.vessel.orbit.LAN),
 			"°"
 		);
 
 		public static readonly VOID_DoubleValue argumentPeriapsis = new VOID_DoubleValue(
 			"Argument of Periapsis",
-			new Func<double>(() => VOID_Core.Instance.vessel.orbit.argumentOfPeriapsis),
+			new Func<double>(() => core.vessel.orbit.argumentOfPeriapsis),
 			"°"
 		);
 
 		public static readonly VOID_DoubleValue localSiderealLongitude = new VOID_DoubleValue(
 			"Local Sidereal Longitude",
 			new Func<double>(() => VOID_Tools.FixDegreeDomain(
-				VOID_Core.Instance.vessel.longitude + VOID_Core.Instance.vessel.orbit.referenceBody.rotationAngle)),
+				core.vessel.longitude + core.vessel.orbit.referenceBody.rotationAngle)),
 			"°"
 		);
 	}

--- a/VOID_Rendezvous.cs
+++ b/VOID_Rendezvous.cs
@@ -60,14 +60,14 @@
 
 			if (this.RegisterModule == null)
 			{
-				this.RegisterModule = VOID_Core.Instance.Modules.Where(m => typeof(VOID_VesselRegister).IsAssignableFrom(m.GetType())).FirstOrDefault() as VOID_VesselRegister;
+				this.RegisterModule = this.core.Modules.Where(m => typeof(VOID_VesselRegister).IsAssignableFrom(m.GetType())).FirstOrDefault() as VOID_VesselRegister;
 			}
 
 			GUILayout.BeginVertical();
 
 			//display both
 			//Show Target Info
-			GUILayout.Label("Target:", VOID_Core.Instance.LabelStyles["center_bold"]);
+			GUILayout.Label("Target:", this.core.LabelStyles["center_bold"]);
 			if (FlightGlobals.fetch.VesselTarget != null)
 			{
 				//a KSP Target (body or vessel) is selected
@@ -94,13 +94,13 @@
 			else
 			{
 				//no KSP Target selected
-				GUILayout.Label("No Target Selected", VOID_Core.Instance.LabelStyles["center_bold"]);
+				GUILayout.Label("No Target Selected", this.core.LabelStyles["center_bold"]);
 			}
 
 			//Show Vessel Register vessel info
 			if (untoggleRegisterInfo == false && this.RegisterModule != default(IVOID_Module))
 			{
-				GUILayout.Label("Vessel Register:", VOID_Core.Instance.LabelStyles["center_bold"]);
+				GUILayout.Label("Vessel Register:", this.core.LabelStyles["center_bold"]);
 				if (this.RegisterModule.selectedVessel != null)
 				{
 					rendezvessel = this.RegisterModule.selectedVessel;
@@ -122,7 +122,7 @@
 				{
 					//vesreg Vessel is null
 					//targ = null;
-					GUILayout.Label("No Vessel Selected", VOID_Core.Instance.LabelStyles["center_bold"]);
+					GUILayout.Label("No Vessel Selected", this.core.LabelStyles["center_bold"]);
 				}
 			}
 
@@ -143,7 +143,7 @@
 			{
 				//Display vessel rendezvous info
 				GUILayout.BeginHorizontal(GUILayout.ExpandWidth(true));
-				GUILayout.Label(v.vesselName, VOID_Core.Instance.LabelStyles["center_bold"], GUILayout.ExpandWidth(true));
+				GUILayout.Label(v.vesselName, this.core.LabelStyles["center_bold"], GUILayout.ExpandWidth(true));
 				GUILayout.EndHorizontal();
 
 				if (v.situation == Vessel.Situations.ESCAPING || v.situation == Vessel.Situations.FLYING || v.situation == Vessel.Situations.ORBITING || v.situation == Vessel.Situations.SUB_ORBITAL)
@@ -196,7 +196,7 @@
 					// Toadicus edit: added local sidereal longitude.
 					GUILayout.BeginHorizontal(GUILayout.ExpandWidth(true));
 					GUILayout.Label("Local Sidereal Longitude:");
-					GUILayout.Label(LSL.ToString("F3") + "°", VOID_Core.Instance.LabelStyles["right"]);
+					GUILayout.Label(LSL.ToString("F3") + "°", this.core.LabelStyles["right"]);
 					GUILayout.EndHorizontal();
 
 					toggleExtendedOrbital.value = GUILayout.Toggle(toggleExtendedOrbital, "Extended info");
@@ -267,7 +267,7 @@
 			else if (cb != null && v == null)
 			{
 				//Display CelstialBody rendezvous info
-				GUILayout.Label(cb.bodyName, VOID_Core.Instance.LabelStyles["center_bold"]);
+				GUILayout.Label(cb.bodyName, this.core.LabelStyles["center_bold"]);
 
 				GUILayout.BeginHorizontal(GUILayout.ExpandWidth(true));
 				GUILayout.Label("Ap/Pe:");

--- a/VOID_SurfAtmo.cs
+++ b/VOID_SurfAtmo.cs
@@ -111,11 +111,11 @@
 			"Altitude (true)",
 			delegate()
 			{
-				double alt_true = VOID_Core.Instance.vessel.orbit.altitude - VOID_Core.Instance.vessel.terrainAltitude;
+				double alt_true = core.vessel.orbit.altitude - core.vessel.terrainAltitude;
 				// HACK: This assumes that on worlds with oceans, all water is fixed at 0 m,
 				// and water covers the whole surface at 0 m.
-				if (VOID_Core.Instance.vessel.terrainAltitude < 0 && VOID_Core.Instance.vessel.mainBody.ocean )
-					alt_true = VOID_Core.Instance.vessel.orbit.altitude;
+				if (core.vessel.terrainAltitude < 0 && core.vessel.mainBody.ocean )
+					alt_true = core.vessel.orbit.altitude;
 				return alt_true;
 			},
 			"m"
@@ -123,12 +123,12 @@
 
 		public static readonly VOID_StrValue surfLatitude = new VOID_StrValue(
 			"Latitude",
-			new Func<string> (() => VOID_Tools.GetLatitudeString(VOID_Core.Instance.vessel))
+			new Func<string> (() => VOID_Tools.GetLatitudeString(core.vessel))
 		);
 
 		public static readonly VOID_StrValue surfLongitude = new VOID_StrValue(
 			"Longitude",
-			new Func<string> (() => VOID_Tools.GetLongitudeString(VOID_Core.Instance.vessel))
+			new Func<string> (() => VOID_Tools.GetLongitudeString(core.vessel))
 		);
 
 		public static readonly VOID_StrValue vesselHeading = new VOID_StrValue(
@@ -148,55 +148,55 @@
 
 		public static readonly VOID_DoubleValue terrainElevation = new VOID_DoubleValue(
 			"Terrain elevation",
-			new Func<double> (() => VOID_Core.Instance.vessel.terrainAltitude),
+			new Func<double> (() => core.vessel.terrainAltitude),
 			"m"
 		);
 
 		public static readonly VOID_DoubleValue surfVelocity = new VOID_DoubleValue(
 			"Surface velocity",
-			new Func<double> (() => VOID_Core.Instance.vessel.srf_velocity.magnitude),
+			new Func<double> (() => core.vessel.srf_velocity.magnitude),
 			"m/s"
 		);
 
 		public static readonly VOID_DoubleValue vertVelocity = new VOID_DoubleValue(
 			"Vertical speed",
-			new Func<double> (() => VOID_Core.Instance.vessel.verticalSpeed),
+			new Func<double> (() => core.vessel.verticalSpeed),
 			"m/s"
 		);
 
 		public static readonly VOID_DoubleValue horzVelocity = new VOID_DoubleValue(
 			"Horizontal speed",
-			new Func<double> (() => VOID_Core.Instance.vessel.horizontalSrfSpeed),
+			new Func<double> (() => core.vessel.horizontalSrfSpeed),
 			"m/s"
 		);
 
 		public static readonly VOID_FloatValue temperature = new VOID_FloatValue(
 			"Temperature",
-			new Func<float> (() => VOID_Core.Instance.vessel.flightIntegrator.getExternalTemperature()),
+			new Func<float> (() => core.vessel.flightIntegrator.getExternalTemperature()),
 			"°C"
 		);
 
 		public static readonly VOID_DoubleValue atmDensity = new VOID_DoubleValue (
 			"Atmosphere Density",
-			new Func<double> (() => VOID_Core.Instance.vessel.atmDensity * 1000f),
+			new Func<double> (() => core.vessel.atmDensity * 1000f),
 			"g/m³"
 		);
 
 		public static readonly VOID_DoubleValue atmPressure = new VOID_DoubleValue (
 			"Pressure",
-			new Func<double> (() => VOID_Core.Instance.vessel.staticPressure),
+			new Func<double> (() => core.vessel.staticPressure),
 			"atm"
 		);
 
 		public static readonly VOID_FloatValue atmLimit = new VOID_FloatValue(
 			"Atmosphere Limit",
-			new Func<float> (() => VOID_Core.Instance.vessel.mainBody.maxAtmosphereAltitude),
+			new Func<float> (() => core.vessel.mainBody.maxAtmosphereAltitude),
 			"m"
 		);
 
 		public static readonly VOID_StrValue currBiome = new VOID_StrValue(
 			"Biome",
-			new Func<string> (() => VOID_Tools.GetBiome(VOID_Core.Instance.vessel).name)
+			new Func<string> (() => VOID_Tools.GetBiome(core.vessel).name)
 		);
 
 	}

file:b/VOID_TWR.cs (new)
--- /dev/null
+++ b/VOID_TWR.cs
@@ -1,1 +1,97 @@
+// VOID © 2014 toadicus
+//
+// This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. To view a
+// copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/
 
+using KSP;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using ToadicusTools;
+using UnityEngine;
+
+namespace VOID
+{
+	public class VOID_TWR : VOID_WindowModule
+	{
+		private List<CelestialBody> sortedBodyList;
+
+		public VOID_TWR() : base()
+		{
+			this._Name = "IP Thrust-to-Weight Ratios";
+		}
+
+		public override void ModuleWindow(int _)
+		{
+			if (
+				HighLogic.LoadedSceneIsEditor ||
+				(TimeWarp.WarpMode == TimeWarp.Modes.LOW) ||
+				(TimeWarp.CurrentRate <= TimeWarp.MaxPhysicsRate)
+			)
+			{
+				Engineer.VesselSimulator.SimManager.RequestSimulation();
+			}
+
+			GUILayout.BeginVertical();
+
+			if (this.sortedBodyList == null)
+			{
+				if (FlightGlobals.Bodies != null && FlightGlobals.Bodies.Count > 0)
+				{
+					this.sortedBodyList = new List<CelestialBody>(FlightGlobals.Bodies);
+					this.sortedBodyList.Sort(new CBListComparer());
+					this.sortedBodyList.Reverse();
+
+					Debug.Log(string.Format("sortedBodyList: {0}", string.Join("\n\t", this.sortedBodyList.Select(b => b.bodyName).ToArray())));
+				}
+				else
+				{
+					GUILayout.BeginHorizontal();
+					GUILayout.Label("Unavailable.");
+					GUILayout.EndHorizontal();
+				}
+			}
+			else
+			{
+				foreach (CelestialBody body in this.sortedBodyList)
+				{
+					GUILayout.BeginHorizontal(GUILayout.ExpandWidth(true));
+
+					GUILayout.Label(body.bodyName);
+					GUILayout.FlexibleSpace();
+					GUILayout.Label(
+						(VOID_Data.nominalThrustWeight.Value / body.GeeASL).ToString("0.0##"),
+						GUILayout.ExpandWidth(true)
+					);
+
+					GUILayout.EndHorizontal();
+				}
+			}
+
+			GUILayout.EndVertical();
+
+			GUI.DragWindow();
+		}
+	}
+
+	public class VOID_EditorTWR : VOID_TWR, IVOID_EditorModule {}
+
+	public static partial class VOID_Data
+	{
+		public static readonly VOID_DoubleValue nominalThrustWeight = new VOID_DoubleValue(
+			"Thrust-to-Weight Ratio",
+			delegate()
+		{
+			if (HighLogic.LoadedSceneIsEditor || currThrustWeight.Value == 0d)
+			{
+				return maxThrustWeight.Value;
+			}
+
+			return currThrustWeight.Value;
+		},
+			""
+		);
+	}
+}
+
+

--- a/VOID_Tools.cs
+++ b/VOID_Tools.cs
@@ -29,12 +29,71 @@
 using KSP;
 using System;
 using System.Collections.Generic;
+using ToadicusTools;
 using UnityEngine;
 
 namespace VOID
 {
 	public static partial class VOID_Tools
 	{
+		#region CelestialBody Utilities
+		public static bool hasAncestor(this CelestialBody bodyA, CelestialBody bodyB)
+		{
+			if (bodyA == null || bodyB == null)
+			{
+				return false;
+			}
+
+			while (bodyA.orbitDriver != null)
+			{
+				if (bodyA.orbit.referenceBody == bodyB)
+				{
+					return true;
+				}
+
+				bodyA = bodyA.orbit.referenceBody;
+			} 
+
+			return false;
+		}
+
+		public static bool NearestRelatedParents(ref CelestialBody bodyA, ref CelestialBody bodyB)
+		{
+			if (bodyA == null || bodyB == null || bodyA.orbitDriver == null || bodyB.orbitDriver == null)
+			{
+				throw new ArgumentException(string.Concat(
+					"CelestialBody::FindRelatedParents: ",
+					"Neither body may be null, and both bodies must have orbits."
+				));
+			}
+
+			CelestialBody a, b;
+
+			a = bodyA;
+
+			while (bodyA.orbitDriver != null)
+			{
+				b = bodyB;
+
+				while (b.orbitDriver != null)
+				{
+					if (a.orbit.referenceBody == b.orbit.referenceBody)
+					{
+						bodyA = a;
+						bodyB = b;
+						return true;
+					}
+
+					b = b.orbit.referenceBody;
+				}
+
+				a = a.orbit.referenceBody;
+			}
+
+			return false;
+		}
+		#endregion
+
 		#region VESSEL_EXTENSIONS_SCIENCE
 		public static CBAttributeMap.MapAttribute GetBiome(this Vessel vessel)
 		{
@@ -275,14 +334,18 @@
 					{
 						func(id);
 					}
+					#if DEBUG
 					catch (ArgumentException ex)
+					#else
+					catch (ArgumentException)
+					#endif
 					{
 						Debug.LogWarning(
 							string.Format("[{0}]: ArgumentException caught during window call.", func.Target.GetType().Name)
 						);
-						#if DEBUG
+						/*#if DEBUG
 						Debug.LogException(ex);
-						#endif
+						#endif*/
 					}
 				};
 			}
@@ -805,6 +868,83 @@
 				return "";
 		}
 	}
+
+	public class CBListComparer : IComparer<CelestialBody>
+	{
+		public int Compare(CelestialBody bodyA, CelestialBody bodyB)
+		{
+			Tools.PostDebugMessage(this, "got bodyA: {0} & bodyB: {1}", bodyA, bodyB);
+
+			if (bodyA == null && bodyB == null)
+			{
+				Tools.PostDebugMessage(this, "both bodies are null, returning 0");
+				return 0;
+			}
+			if (bodyA == null)
+			{
+				Tools.PostDebugMessage(this, "bodyA is null, returning -1");
+				return -1;
+			}
+			if (bodyB == null)
+			{
+				Tools.PostDebugMessage(this, "bodyB is null, returning 1");
+				return 1;
+			}
+
+			Tools.PostDebugMessage(this, "bodies are not null, carrying on");
+
+			if (object.ReferenceEquals(bodyA, bodyB))
+			{
+				Tools.PostDebugMessage(this, "bodies are equal, returning 0");
+				return 0;
+			}
+
+			Tools.PostDebugMessage(this, "bodies are not equal, carrying on");
+
+			if (bodyA.orbitDriver == null)
+			{
+				Tools.PostDebugMessage(this, "bodyA.orbit is null (bodyA is the sun, returning 1");
+				return 1;
+			}
+			if (bodyB.orbitDriver == null)
+			{
+				Tools.PostDebugMessage(this, "bodyB.orbit is null (bodyB is the sun, returning -1");
+				return -1;
+			}
+
+			Tools.PostDebugMessage(this, "orbits are not null, carrying on");
+
+			if (bodyA.orbit.referenceBody == bodyB.orbit.referenceBody)
+			{
+				Tools.PostDebugMessage(this, "bodies share a parent, comparing SMAs");
+				return -bodyA.orbit.semiMajorAxis.CompareTo(bodyB.orbit.semiMajorAxis);
+			}
+
+			Tools.PostDebugMessage(this, "orbits do not share a parent, carrying on");
+
+			if (bodyA.hasAncestor(bodyB))
+			{
+				Tools.PostDebugMessage(this, "bodyA is a moon or sub-moon of bodyB, returning -1");
+				return -1;
+			}
+			if (bodyB.hasAncestor(bodyA))
+			{
+				Tools.PostDebugMessage(this, "bodyA is a moon or sub-moon of bodyB, returning 1");
+				return 1;
+			}
+
+			Tools.PostDebugMessage(this, "bodies do not have an obvious relationship, searching for one");
+
+			if (VOID_Tools.NearestRelatedParents(ref bodyA, ref bodyB))
+			{
+				Tools.PostDebugMessage(this, "good relation {0} and {1}, comparing", bodyA.bodyName, bodyB.bodyName);
+				return this.Compare(bodyA, bodyB);
+			}
+
+			Tools.PostDebugMessage(this, "bad relation {0} and {1}, giving up", bodyA.bodyName, bodyB.bodyName);
+
+			return 0;
+		}
+	}
 }
 
-

--- a/VOID_VesselInfo.cs
+++ b/VOID_VesselInfo.cs
@@ -57,7 +57,7 @@
 
 			GUILayout.Label(
 				vessel.vesselName,
-				VOID_Core.Instance.LabelStyles["center_bold"],
+				core.LabelStyles["center_bold"],
 				GUILayout.ExpandWidth(true));
 
 			VOID_Data.geeForce.DoGUIHorizontal ("F2");
@@ -66,7 +66,7 @@
 
 			VOID_Data.totalMass.DoGUIHorizontal ("F3");
 
-			VOID_Data.resourceMass.DoGUIHorizontal ("F3");
+			VOID_Data.comboResourceMass.DoGUIHorizontal ();
 
 			VOID_Data.stageDeltaV.DoGUIHorizontal (3, false);
 
@@ -92,13 +92,13 @@
 	{
 		public static readonly VOID_DoubleValue geeForce = new VOID_DoubleValue(
 			"G-force",
-			new Func<double>(() => VOID_Core.Instance.vessel.geeForce),
+			new Func<double>(() => core.vessel.geeForce),
 			"gees"
 		);
 
 		public static readonly VOID_IntValue partCount = new VOID_IntValue(
 			"Parts",
-			new Func<int>(() => VOID_Core.Instance.vessel.Parts.Count),
+			new Func<int>(() => core.vessel.Parts.Count),
 			""
 		);
 
@@ -130,6 +130,31 @@
 			"tons"
 		);
 
+		public static readonly VOID_DoubleValue stageResourceMass = new VOID_DoubleValue(
+			"Resource Mass (Current Stage)",
+			delegate()
+			{
+				if (SimManager.LastStage == null)
+				{
+					return double.NaN;
+				}
+
+				return SimManager.LastStage.mass - SimManager.LastStage.baseMass;
+			},
+			"tons"
+		);
+
+		public static readonly VOID_StrValue comboResourceMass = new VOID_StrValue(
+			"Resource Mass (curr / total)",
+			delegate()
+		{
+			return string.Format("{0} / {1}",
+				stageResourceMass.ValueUnitString("F3"),
+				resourceMass.ValueUnitString("F3")
+			);
+		}
+		);
+
 		public static readonly VOID_DoubleValue stageDeltaV = new VOID_DoubleValue(
 			"DeltaV (Current Stage)",
 			delegate()
@@ -154,7 +179,7 @@
 
 		public static readonly VOID_FloatValue mainThrottle = new VOID_FloatValue(
 			"Throttle",
-			new Func<float>(() => VOID_Core.Instance.vessel.ctrlState.mainThrottle * 100f),
+			new Func<float>(() => core.vessel.ctrlState.mainThrottle * 100f),
 			"%"
 		);
 
@@ -199,7 +224,7 @@
 				return double.NaN;
 			}
 
-			return SimManager.LastStage.maxThrustToWeight;
+			return SimManager.LastStage.thrustToWeight;
 		},
 			""
 		);
@@ -228,8 +253,8 @@
 
 				double maxThrust = SimManager.LastStage.thrust;
 				double mass = SimManager.LastStage.totalMass;
-				double gravity = (VOID_Core.Constant_G * VOID_Core.Instance.vessel.mainBody.Mass) /
-				(VOID_Core.Instance.vessel.mainBody.Radius * VOID_Core.Instance.vessel.mainBody.Radius);
+				double gravity = (VOID_Core.Constant_G * core.vessel.mainBody.Mass) /
+				(core.vessel.mainBody.Radius * core.vessel.mainBody.Radius);
 				double weight = mass * gravity;
 
 				return maxThrust / weight;
@@ -247,7 +272,7 @@
 				currentAmount = 0d;
 				currentRequirement = 0d;
 
-				foreach (Part part in VOID_Core.Instance.vessel.Parts)
+				foreach (Part part in core.vessel.Parts)
 				{
 					if (part.enabled)
 					{

--- a/VOID_VesselRegister.cs
+++ b/VOID_VesselRegister.cs
@@ -69,7 +69,7 @@
 
 		public override void ModuleWindow(int _)
 		{
-			if (!VOID_Core.Instance.allVesselTypes.Any())
+			if (!this.core.allVesselTypes.Any())
 			{
 				return;
 			}
@@ -80,33 +80,33 @@
 			if (GUILayout.Button("<"))
 			{
 				selectedBodyIdx--;
-				if (selectedBodyIdx < 0) selectedBodyIdx = VOID_Core.Instance.allBodies.Count - 1;
+				if (selectedBodyIdx < 0) selectedBodyIdx = this.core.allBodies.Count - 1;
 			}
-			GUILayout.Label(VOID_Core.Instance.allBodies[selectedBodyIdx].bodyName, VOID_Core.Instance.LabelStyles["center_bold"], GUILayout.ExpandWidth(true));
+			GUILayout.Label(this.core.allBodies[selectedBodyIdx].bodyName, this.core.LabelStyles["center_bold"], GUILayout.ExpandWidth(true));
 			if (GUILayout.Button(">"))
 			{
 				selectedBodyIdx++;
-				if (selectedBodyIdx > VOID_Core.Instance.allBodies.Count - 1) selectedBodyIdx = 0;
+				if (selectedBodyIdx > this.core.allBodies.Count - 1) selectedBodyIdx = 0;
 			}
 			GUILayout.EndHorizontal();
 
-			seletedBody = VOID_Core.Instance.allBodies[selectedBodyIdx];
+			seletedBody = this.core.allBodies[selectedBodyIdx];
 
 			GUILayout.BeginHorizontal(GUILayout.ExpandWidth(true));
 			if (GUILayout.Button("<"))
 			{
 				selectedVesselTypeIdx--;
-				if (selectedVesselTypeIdx < 0) selectedVesselTypeIdx = VOID_Core.Instance.allVesselTypes.Count - 1;
+				if (selectedVesselTypeIdx < 0) selectedVesselTypeIdx = this.core.allVesselTypes.Count - 1;
 			}
-			GUILayout.Label(VOID_Core.Instance.allVesselTypes[selectedVesselTypeIdx].ToString(), VOID_Core.Instance.LabelStyles["center_bold"], GUILayout.ExpandWidth(true));
+			GUILayout.Label(this.core.allVesselTypes[selectedVesselTypeIdx].ToString(), this.core.LabelStyles["center_bold"], GUILayout.ExpandWidth(true));
 			if (GUILayout.Button(">"))
 			{
 				selectedVesselTypeIdx++;
-				if (selectedVesselTypeIdx > VOID_Core.Instance.allVesselTypes.Count - 1) selectedVesselTypeIdx = 0;
+				if (selectedVesselTypeIdx > this.core.allVesselTypes.Count - 1) selectedVesselTypeIdx = 0;
 			}
 			GUILayout.EndHorizontal();
 
-			selectedVesselType = VOID_Core.Instance.allVesselTypes[selectedVesselTypeIdx];
+			selectedVesselType = this.core.allVesselTypes[selectedVesselTypeIdx];
 
 			GUILayout.BeginHorizontal(GUILayout.ExpandWidth(true));
 			if (GUILayout.Button("Landed", GUILayout.ExpandWidth(true))) vesselSituation = "Landed";
@@ -116,7 +116,7 @@
 			GUILayout.BeginHorizontal(GUILayout.ExpandWidth(true));
 			GUILayout.Label(
 				VOID_Tools.UppercaseFirst(vesselSituation) + " " + selectedVesselType.ToString() + "s  @ " + seletedBody.bodyName,
-				VOID_Core.Instance.LabelStyles["center"],
+				this.core.LabelStyles["center"],
 				GUILayout.ExpandWidth(true));
 			GUILayout.EndHorizontal();