diff --git a/source/Cosmos.System2/FileSystem/Listing/DirectoryEntry.cs b/source/Cosmos.System2/FileSystem/Listing/DirectoryEntry.cs
index 95749a93b..e047821bf 100644
--- a/source/Cosmos.System2/FileSystem/Listing/DirectoryEntry.cs
+++ b/source/Cosmos.System2/FileSystem/Listing/DirectoryEntry.cs
@@ -29,11 +29,26 @@ namespace Cosmos.System.FileSystem.Listing
     /// </summary>
     public abstract class DirectoryEntry
     {
+        /// <summary>
+        /// Entry size.
+        /// </summary>
         public long mSize;
+        /// <summary>
+        /// Entry full path.
+        /// </summary>
         public string mFullPath;
+        /// <summary>
+        /// Entry name.
+        /// </summary>
         public string mName;
         protected readonly FileSystem mFileSystem;
+        /// <summary>
+        /// Entry parent.
+        /// </summary>
         public readonly DirectoryEntry mParent;
+        /// <summary>
+        /// Entry type.
+        /// </summary>
         public readonly DirectoryEntryTypeEnum mEntryType;
 
         /// <summary>
@@ -45,12 +60,8 @@ namespace Cosmos.System.FileSystem.Listing
         /// <param name="aName">The entry name.</param>
         /// <param name="aSize">The size of the entry.</param>
         /// <param name="aEntryType">The ype of the entry.</param>
-        /// <exception cref="ArgumentNullException"></exception>
-        /// <exception cref="ArgumentException">
-        /// Argument is null or empty
-        /// </exception>
-        /// <exception cref="ArgumentOutOfRangeException">
-        /// </exception>
+        /// <exception cref="ArgumentNullException">Thrown if aFileSystem is null.</exception>
+        /// <exception cref="ArgumentException">Thrown if aFullPath / aName is null.</exception>
         protected DirectoryEntry(FileSystem aFileSystem, DirectoryEntry aParent, string aFullPath, string aName, long aSize, DirectoryEntryTypeEnum aEntryType)
         {
             if (aFileSystem == null)
@@ -74,12 +85,28 @@ namespace Cosmos.System.FileSystem.Listing
             mFullPath = aFullPath;
         }
 
+        /// <summary>
+        /// Set entry name.
+        /// </summary>
+        /// <param name="aName">A name to be set.</param>
         public abstract void SetName(string aName);
 
+        /// <summary>
+        /// Set entry size.
+        /// </summary>
+        /// <param name="aSize">A size to be set.</param>
         public abstract void SetSize(long aSize);
 
+        /// <summary>
+        /// Get file stream.
+        /// </summary>
+        /// <returns>Stream value.</returns>
         public abstract Stream GetFileStream();
 
+        /// <summary>
+        /// Get used space.
+        /// </summary>
+        /// <returns>long value.</returns>
         public abstract long GetUsedSpace();
     }
 }