Add XML comments to public entities.

Sega/Dreamcast.cs

@@ -40,10 +40,18 @@ using Marshal = Aaru.Helpers.Marshal;
 
 namespace Aaru.Decoders.Sega
 {
+    /// <summary>
+    /// Represents the IP.BIN from a SEGA Dreamcast
+    /// </summary>
     [SuppressMessage("ReSharper", "InconsistentNaming"), SuppressMessage("ReSharper", "MemberCanBeInternal"),
      SuppressMessage("ReSharper", "MemberCanBePrivate.Global")]
     public static class Dreamcast
     {
+        /// <summary>
+        /// Decodes an IP.BIN sector in Dreamcast format
+        /// </summary>
+        /// <param name="ipbin_sector">IP.BIN sector</param>
+        /// <returns>Decoded IP.BIN</returns>
         public static IPBin? DecodeIPBin(byte[] ipbin_sector)
         {
             if(ipbin_sector == null)
@@ -105,6 +113,11 @@ namespace Aaru.Decoders.Sega
             return Encoding.ASCII.GetString(ipbin.SegaHardwareID) == "SEGA SEGAKATANA " ? ipbin : (IPBin?)null;
         }
 
+        /// <summary>
+        /// Pretty prints a decoded IP.BIN in Dreamcast format
+        /// </summary>
+        /// <param name="decoded">Decoded IP.BIN</param>
+        /// <returns>Description of the IP.BIN contents</returns>
         public static string Prettify(IPBin? decoded)
         {
             if(decoded == null)
@@ -257,6 +270,9 @@ namespace Aaru.Decoders.Sega
             return IPBinInformation.ToString();
         }
 
+        /// <summary>
+        /// SEGA IP.BIN format for Dreamcast
+        /// </summary>
         [StructLayout(LayoutKind.Sequential, Pack = 1)]
         public struct IPBin
         {