diff --git a/source/Cosmos.System2_Plugs/System/ConsoleImpl.cs b/source/Cosmos.System2_Plugs/System/ConsoleImpl.cs
index 3c6af9d5ce..0d969c2280 100644
--- a/source/Cosmos.System2_Plugs/System/ConsoleImpl.cs
+++ b/source/Cosmos.System2_Plugs/System/ConsoleImpl.cs
@@ -36,24 +36,22 @@ public static void set_BackgroundColor(ConsoleColor value)
 
         public static int get_BufferHeight()
         {
-            WriteLine("Not implemented: get_BufferHeight");
-            return -1;
+            throw new NotImplementedException("Not implemented: get_BufferHeight");
         }
 
         public static void set_BufferHeight(int aHeight)
         {
-            WriteLine("Not implemented: set_BufferHeight");
+            throw new NotImplementedException("Not implemented: set_BufferHeight");
         }
 
         public static int get_BufferWidth()
         {
-            WriteLine("Not implemented: get_BufferWidth");
-            return -1;
+            throw new NotImplementedException("Not implemented: get_BufferWidth");
         }
 
         public static void set_BufferWidth(int aWidth)
         {
-            WriteLine("Not implemented: set_BufferWidth");
+            throw new NotImplementedException("Not implemented: set_BufferWidth");
         }
 
         public static bool get_CapsLock()
@@ -81,13 +79,18 @@ public static void set_CursorLeft(int x)
                 return;
             }
 
-            if (x < get_WindowWidth())
+            if (x < 0)
+            {
+                throw new ArgumentException("The value x must be at least 0!");
+            }
+
+            if (x < get_WindowHeight())
             {
                 xConsole.X = x;
             }
             else
             {
-                WriteLine("x must be lower than the console width!");
+                throw new ArgumentException("The value x must be lower than the console width!");
             }
         }
 
@@ -133,13 +136,18 @@ public static void set_CursorTop(int y)
                 return;
             }
 
+            if (y < 0)
+            {
+                throw new ArgumentException("The value y must be at least 0!");
+            }
+
             if (y < get_WindowHeight())
             {
                 xConsole.Y = y;
             }
             else
             {
-                WriteLine("y must be lower than the console height!");
+                throw new ArgumentException("The value y must be lower than the console height!");
             }
         }
 
@@ -216,14 +224,12 @@ public static bool get_KeyAvailable()
 
         public static int get_LargestWindowHeight()
         {
-            WriteLine("Not implemented: get_LargestWindowHeight");
-            return -1;
+            throw new NotImplementedException("Not implemented: get_LargestWindowHeight");
         }
 
         public static int get_LargestWindowWidth()
         {
-            WriteLine("Not implemented: get_LargestWindowWidth");
-            return -1;
+            throw new NotImplementedException("Not implemented: get_LargestWindowWidth");
         }
 
         public static bool get_NumberLock()
@@ -238,24 +244,22 @@ public static bool get_NumberLock()
 
         public static string get_Title()
         {
-            WriteLine("Not implemented: get_Title");
-            return string.Empty;
+            throw new NotImplementedException("Not implemented: get_Title");
         }
 
         public static void set_Title(string value)
         {
-            WriteLine("Not implemented: set_Title");
+            throw new NotImplementedException("Not implemented: set_Title");
         }
 
         public static bool get_TreatControlCAsInput()
         {
-            WriteLine("Not implemented: get_TreatControlCAsInput");
-            return false;
+            throw new NotImplementedException("Not implemented: get_TreatControlCAsInput");
         }
 
         public static void set_TreatControlCAsInput(bool value)
         {
-            WriteLine("Not implemented: set_TreatControlCAsInput");
+            throw new NotImplementedException("Not implemented: set_TreatControlCAsInput");
         }
 
         public static int get_WindowHeight()
@@ -271,29 +275,27 @@ public static int get_WindowHeight()
 
         public static void set_WindowHeight(int value)
         {
-            WriteLine("Not implemented: set_WindowHeight");
+            throw new NotImplementedException("Not implemented: set_WindowHeight");
         }
 
         public static int get_WindowLeft()
         {
-            WriteLine("Not implemented: get_WindowLeft");
-            return -1;
+            throw new NotImplementedException("Not implemented: get_WindowLeft");
         }
 
         public static void set_WindowLeft(int value)
         {
-            WriteLine("Not implemented: set_WindowLeft");
+            throw new NotImplementedException("Not implemented: set_WindowLeft");
         }
 
         public static int get_WindowTop()
         {
-            WriteLine("Not implemented: get_WindowTop");
-            return -1;
+            throw new NotImplementedException("Not implemented: get_WindowTop");
         }
 
         public static void set_WindowTop(int value)
         {
-            WriteLine("Not implemented: set_WindowTop");
+            throw new NotImplementedException("Not implemented: set_WindowTop");
         }
 
         public static int get_WindowWidth()
@@ -309,7 +311,7 @@ public static int get_WindowWidth()
 
         public static void set_WindowWidth(int value)
         {
-            WriteLine("Not implemented: set_WindowWidth");
+            throw new NotImplementedException("Not implemented: set_WindowWidth");
         }
 
         /// <summary>
@@ -361,7 +363,7 @@ public static void Clear()
         public static void MoveBufferArea(int sourceLeft, int sourceTop, int sourceWidth, int sourceHeight,
             int targetLeft, int targetTop, Char sourceChar, ConsoleColor sourceForeColor, ConsoleColor sourceBackColor)
         {
-            WriteLine("Not implemented: MoveBufferArea");
+            throw new NotImplementedException("Not implemented: MoveBufferArea");
         }
 
         //public static Stream OpenStandardError() {
@@ -540,7 +542,7 @@ public static void ResetColor()
 
         public static void SetBufferSize(int width, int height)
         {
-            WriteLine("Not implemented: SetBufferSize");
+            throw new NotImplementedException("Not implemented: SetBufferSize");
         }
 
         public static void SetCursorPosition(int left, int top)
@@ -563,12 +565,12 @@ public static void SetCursorPosition(int left, int top)
 
         public static void SetWindowPosition(int left, int top)
         {
-            WriteLine("Not implemented: SetWindowPosition");
+            throw new NotImplementedException("Not implemented: SetWindowPosition");
         }
 
         public static void SetWindowSize(int width, int height)
         {
-            WriteLine("Not implemented: SetWindowSize");
+            throw new NotImplementedException("Not implemented: SetWindowSize");
         }
 
         #region Write
@@ -659,7 +661,7 @@ public static void Write(char[] aBuffer, int aIndex, int aCount)
 
 #endregion
 
-#region WriteLine
+        #region WriteLine
 
         public static void WriteLine() => Write(Environment.NewLine);