diff --git a/src/Builtin/Worlds.cs b/src/Builtin/Worlds.cs
index 64f2499..a817c39 100644
--- a/src/Builtin/Worlds.cs
+++ b/src/Builtin/Worlds.cs
@@ -1,5 +1,12 @@
 namespace DCFApixels.DragonECS
 {
+    //TODO использовать этот мир для холостых вызовов. чтоб все нулевые ентити стучались в него, так можно попробовать сократить число проверок
+    //internal sealed class EcsDeathWrold : EcsWorld<EcsDefaultWrold>
+    //{
+    //    public EcsDeathWrold(EcsPipeline pipeline) : base(pipeline) { }
+    //}
+
+
     public sealed class EcsDefaultWrold : EcsWorld<EcsDefaultWrold>
     {
         public EcsDefaultWrold(EcsPipeline pipeline) : base(pipeline) { }
diff --git a/src/EcsGroup.cs b/src/EcsGroup.cs
index a4fa31f..4c33ad2 100644
--- a/src/EcsGroup.cs
+++ b/src/EcsGroup.cs
@@ -10,8 +10,12 @@ namespace DCFApixels.DragonECS
     {
         private readonly EcsGroup _source;
 
+        #region Constructors
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public EcsReadonlyGroup(EcsGroup source) => _source = source;
+        #endregion
+
+        #region Properties
         public int Count
         {
             [MethodImpl(MethodImplOptions.AggressiveInlining)]
@@ -27,10 +31,14 @@ namespace DCFApixels.DragonECS
             [MethodImpl(MethodImplOptions.AggressiveInlining)]
             get => _source.CapacitySparce;
         }
+        #endregion
+
+        #region Methods
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public bool Contains(int entityID) => _source.Contains(entityID);
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public EcsGroup.Enumerator GetEnumerator() => _source.GetEnumerator();
+        #endregion
     }
 
     // не может содержать значение 0
@@ -174,8 +182,6 @@ namespace DCFApixels.DragonECS
             _sparse[entityID] = 0;
         }
 
-
-
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         private void AddDelayedOp(int entityID, int isAddBitFlag)
         {
diff --git a/src/EcsPool.cs b/src/EcsPool.cs
index e82d424..e268a4c 100644
--- a/src/EcsPool.cs
+++ b/src/EcsPool.cs
@@ -56,7 +56,6 @@ namespace DCFApixels.DragonECS
     {
         private readonly int _id;
         private readonly IEcsWorld _source;
-        //  private readonly EcsGroup _entities;
 
         private int[] _mapping;// index = entity / value = itemIndex;/ value = 0 = no entity
         private T[] _items; //dense
diff --git a/src/EcsWorld.cs b/src/EcsWorld.cs
index 99a1d67..cb5e07a 100644
--- a/src/EcsWorld.cs
+++ b/src/EcsWorld.cs
@@ -1,10 +1,7 @@
 using System;
 using System.Collections.Generic;
-using System.Collections.ObjectModel;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
-using System.Xml;
-using static UnityEditor.Progress;
 
 namespace DCFApixels.DragonECS
 {