diff --git a/README.md b/README.md
index aca3821be..c0424f750 100644
--- a/README.md
+++ b/README.md
@@ -174,7 +174,7 @@ Use NuGet to install the `Terminal.Gui` NuGet package: https://www.nuget.org/pac
 
 ## Running and Building
 
-* *`Terminal.Gui`* - Build and run using the .NET SDK command line tools (`doetnet build` in the root directory) or with Visual Studio 2019.
+* *`Terminal.Gui`* - Build and run using the .NET SDK command line tools (`dotnet build` in the root directory) or with Visual Studio 2019.
 
 ## Contributing
 
diff --git a/Terminal.Gui/ConsoleDrivers/CursesDriver/UnixMainLoop.cs b/Terminal.Gui/ConsoleDrivers/CursesDriver/UnixMainLoop.cs
index 1db1383cb..a9da8d9f0 100644
--- a/Terminal.Gui/ConsoleDrivers/CursesDriver/UnixMainLoop.cs
+++ b/Terminal.Gui/ConsoleDrivers/CursesDriver/UnixMainLoop.cs
@@ -166,11 +166,36 @@ namespace Terminal.Gui {
 			}
 		}
 
+
 		bool IMainLoopDriver.EventsPending (bool wait)
+		{
+			int pollTimeout = 0;
+			int n;
+
+			if (CkeckTimeout (wait, ref pollTimeout))
+				return true;
+
+			UpdatePollMap ();
+
+			while (true) {
+				n = poll (pollmap, (uint)pollmap.Length, 0);
+				if (n > 0) {
+					break;
+				}
+				if (mainLoop.idleHandlers.Count > 0 || CkeckTimeout (wait, ref pollTimeout)) {
+					return true;
+				}
+			}
+			int ic;
+			lock (mainLoop.idleHandlers)
+				ic = mainLoop.idleHandlers.Count;
+			return n > 0 || mainLoop.timeouts.Count > 0 && ((mainLoop.timeouts.Keys [0] - DateTime.UtcNow.Ticks) < 0) || ic > 0;
+		}
+
+		bool CkeckTimeout (bool wait, ref int pollTimeout)
 		{
 			long now = DateTime.UtcNow.Ticks;
 
-			int pollTimeout, n;
 			if (mainLoop.timeouts.Count > 0) {
 				pollTimeout = (int)((mainLoop.timeouts.Keys [0] - now) / TimeSpan.TicksPerMillisecond);
 				if (pollTimeout < 0)
@@ -182,24 +207,7 @@ namespace Terminal.Gui {
 			if (!wait)
 				pollTimeout = 0;
 
-			UpdatePollMap ();
-
-			while (true) {
-				if (wait && pollTimeout == -1) {
-					pollTimeout = 0;
-				}
-				n = poll (pollmap, (uint)pollmap.Length, pollTimeout);
-				if (n > 0) {
-					break;
-				}
-				if (mainLoop.timeouts.Count > 0 || mainLoop.idleHandlers.Count > 0) {
-					return true;
-				}
-			}
-			int ic;
-			lock (mainLoop.idleHandlers)
-				ic = mainLoop.idleHandlers.Count;
-			return n > 0 || mainLoop.timeouts.Count > 0 && ((mainLoop.timeouts.Keys [0] - DateTime.UtcNow.Ticks) < 0) || ic > 0;
+			return false;
 		}
 
 		void IMainLoopDriver.MainIteration ()
diff --git a/UICatalog/Scenarios/ComputedLayout.cs b/UICatalog/Scenarios/ComputedLayout.cs
index d5aecf6e3..3c53b7bf0 100644
--- a/UICatalog/Scenarios/ComputedLayout.cs
+++ b/UICatalog/Scenarios/ComputedLayout.cs
@@ -36,19 +36,21 @@ namespace UICatalog {
 
 			// Demonstrate using Dim to create a vertical ruler that always measures the parent window's height
 			// TODO: Either build a custom control for this or implement linewrap in Label #352
-			//var verticalRuler = new Label ("") {
-			//	X = 0,
-			//	Y = 0,
-			//	Width = 1,
-			//	Height = Dim.Fill (),
-			//	ColorScheme = Colors.Error
-			//};
+			const string vrule = "|\n1\n2\n3\n4\n5\n6\n7\n8\n9\n";
 
-			//Application.OnResized += () => {
-			//	verticalRuler.Text = rule.Repeat ((int)Math.Ceiling ((double)(verticalRuler.Bounds.Height) / (double)rule.Length)) [0..(verticalRuler.Bounds.Height)];
-			//};
+			var verticalRuler = new Label ("") {
+				X = 0,
+				Y = 0,
+				Width = 1,
+				Height = Dim.Fill (),
+				ColorScheme = Colors.Error
+			};
 
-			//Win.Add (verticalRuler);
+			Application.Resized += (sender, a) => {
+				verticalRuler.Text = vrule.Repeat ((int)Math.Ceiling ((double)(verticalRuler.Bounds.Height*2) / (double)rule.Length)) [0..(verticalRuler.Bounds.Height*2)];
+			};
+
+			Win.Add (verticalRuler);
 
 			// Demonstrate At - Absolute Layout using Pos
 			var absoluteButton = new Button ("Absolute At(2,1)") {