diff --git a/SabreTools.Models/SecuROM/MatroshkaPackage.cs b/SabreTools.Models/SecuROM/MatroshkaPackage.cs
index c707dc7..7b6a45c 100644
--- a/SabreTools.Models/SecuROM/MatroshkaPackage.cs
+++ b/SabreTools.Models/SecuROM/MatroshkaPackage.cs
@@ -28,14 +28,17 @@ namespace SabreTools.Models.SecuROM
 
         #region Release Control only
 
-        // The combination of the 3 following values have only been seen in
-        // one of 3 distinct patterns. The meaning of these patterns is unknown.
+        // The combination of the 4 following values have only been seen in
+        // one of 4 distinct patterns. The meaning of these patterns is unknown.
+        // - 0 0 0
         // - 0 0 1
         // - 0 1 1
         // - 1 1 1
         // These values do not seem to have a link to whether the paths included
         // in entries are 256- or 512-byte. There also do not seem to be any links
         // between these values and the hex string values.
+        // There is one example of "0 0 0" which contains a key hex string of all
+        // 0x00 values and 256-byte paths.
 
         /// <summary>
         /// One of four unknown values only observed on RC matroschka sections
@@ -52,7 +55,7 @@ namespace SabreTools.Models.SecuROM
         /// <summary>
         /// One of four unknown values only observed on RC matroschka sections
         /// </summary>
-        /// <remarks>Only a value of 1 has been found</remarks>
+        /// <remarks>Only values of 0 or 1 have been found</remarks>
         public uint? UnknownRCValue3 { get; set; }
 
         /// <summary>