Update about Manager.

PriFormat/ByteSpan.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace PriFormat
+{
+	public struct ByteSpan
+	{
+		public long Offset { get; private set; }
+		public uint Length { get; private set; }
+		public ByteSpan (long offset, uint length)
+		{
+			Offset = offset;
+			Length = length;
+		}
+		public override string ToString ()
+		{
+			return "ByteSpan | Offset = " + Offset + "\t, Length = " + Length;
+		}
+	}
+}