Fix minor doc issues

Source/Engine/Debug/DebugCommands.cs

@@ -142,7 +142,7 @@ namespace FlaxEngine
 
         private static string FilterWhitespaces(string str)
         {
-            if (str.Contains("  ", StringComparison.Ordinal))
+            if (str != null && str.Contains("  ", StringComparison.Ordinal))
             {
                 if (_sb == null)
                     _sb = new StringBuilder();

Source/Engine/Engine/Globals.h

@@ -13,8 +13,6 @@ API_CLASS(Static, Attributes="DebugCommand") class FLAXENGINE_API Globals
     DECLARE_SCRIPTING_TYPE_NO_SPAWN(Globals);
 
 public:
-    // Paths
-
     // Main engine directory path.
     API_FIELD(ReadOnly) static String StartupFolder;
 
@@ -54,8 +52,6 @@ public:
 #endif
 
 public:
-    // State
-
     // True if fatal error occurred (engine is exiting).
     // [Deprecated in v1.10]
     DEPRECATED("Use Engine::FatalError instead.") static bool FatalErrorOccurred;
@@ -91,14 +87,10 @@ public:
     DEPRECATED("Use Engine::ExitCode instead.") static int32 ExitCode;
 
 public:
-    // Threading
-
     // Main Engine thread id.
     API_FIELD(ReadOnly) static uint64 MainThreadID;
 
 public:
-    // Config
-
     /// <summary>
     /// The full engine version.
     /// </summary>

Source/Engine/Graphics/Graphics.h

@@ -19,32 +19,32 @@ public:
     API_FIELD() static bool UseVSync;
 
     /// <summary>
-    /// Anti Aliasing quality setting.
+    /// Anti Aliasing quality setting. Available values are: Low, Medium, High, Ultra (or 0, 1, 2, 3).
     /// </summary>
     API_FIELD() static Quality AAQuality;
 
     /// <summary>
-    /// Screen Space Reflections quality setting.
+    /// Screen Space Reflections quality setting. Available values are: Low, Medium, High, Ultra (or 0, 1, 2, 3).
     /// </summary>
     API_FIELD() static Quality SSRQuality;
 
     /// <summary>
-    /// Screen Space Ambient Occlusion quality setting.
+    /// Screen Space Ambient Occlusion quality setting. Available values are: Low, Medium, High, Ultra (or 0, 1, 2, 3).
     /// </summary>
     API_FIELD() static Quality SSAOQuality;
 
     /// <summary>
-    /// Volumetric Fog quality setting.
+    /// Volumetric Fog quality setting. Available values are: Low, Medium, High, Ultra (or 0, 1, 2, 3).
     /// </summary>
     API_FIELD() static Quality VolumetricFogQuality;
 
     /// <summary>
-    /// The shadows quality.
+    /// The shadows quality. Available values are: Low, Medium, High, Ultra (or 0, 1, 2, 3).
     /// </summary>
     API_FIELD() static Quality ShadowsQuality;
 
     /// <summary>
-    /// The shadow maps quality (textures resolution).
+    /// The shadow maps quality (textures resolution). Available values are: Low, Medium, High, Ultra (or 0, 1, 2, 3).
     /// </summary>
     API_FIELD() static Quality ShadowMapsQuality;
 
@@ -59,12 +59,12 @@ public:
     API_FIELD() static bool AllowCSMBlending;
 
     /// <summary>
-    /// The Global SDF quality. Controls the volume texture resolution and amount of cascades to use.
+    /// The Global SDF quality. Controls the volume texture resolution and amount of cascades to use. Available values are: Low, Medium, High, Ultra (or 0, 1, 2, 3).
     /// </summary>
     API_FIELD() static Quality GlobalSDFQuality;
 
     /// <summary>
-    /// The Global Illumination quality. Controls the quality of the GI effect.
+    /// The Global Illumination quality. Controls the quality of the GI effect. Available values are: Low, Medium, High, Ultra (or 0, 1, 2, 3).
     /// </summary>
     API_FIELD() static Quality GIQuality;