diff --git a/src/PdfSharp/Pdf.Advanced/PdfResourceMap.cs b/src/PdfSharp/Pdf.Advanced/PdfResourceMap.cs
index 154b488e..69803dc8 100644
--- a/src/PdfSharp/Pdf.Advanced/PdfResourceMap.cs
+++ b/src/PdfSharp/Pdf.Advanced/PdfResourceMap.cs
@@ -34,16 +34,27 @@ namespace PdfSharp.Pdf.Advanced
     /// <summary>
     /// Base class for all dictionaries that map resource names to objects.
     /// </summary>
-    internal class PdfResourceMap : PdfDictionary //, IEnumerable
+    public sealed class PdfResourceMap : PdfDictionary //, IEnumerable
     {
+        /// <summary>
+        /// Instantiates a new instance of the <see cref="PdfResourceMap"/> class.
+        /// </summary>
         public PdfResourceMap()
         { }
 
+        /// <summary>
+        /// Instantiates a new instance of the <see cref="PdfResourceMap"/> class.
+        /// </summary>
+        /// <param name="document">The <see cref="PdfDocument"/></param>
         public PdfResourceMap(PdfDocument document)
             : base(document)
         { }
 
-        protected PdfResourceMap(PdfDictionary dict)
+        /// <summary>
+        /// Instantiates a new instance of the <see cref="PdfResourceMap"/> class.
+        /// </summary>
+        /// <param name="dict">The <see cref="PdfDictionary"/></param>
+        public PdfResourceMap(PdfDictionary dict)
             : base(dict)
         { }
 
@@ -61,7 +72,7 @@ protected PdfResourceMap(PdfDictionary dict)
         /// <summary>
         /// Adds all imported resource names to the specified hashtable.
         /// </summary>
-        internal void CollectResourceNames(Dictionary<string, object> usedResourceNames)
+        public void CollectResourceNames(Dictionary<string, object> usedResourceNames)
         {
             // ?TODO: Imported resources (e.g. fonts) can be reused, but I think this is rather difficult. Will be an issue in PDFsharp 2.0.
             PdfName[] names = Elements.KeyNames;
diff --git a/src/PdfSharp/Pdf.Advanced/PdfResources.cs b/src/PdfSharp/Pdf.Advanced/PdfResources.cs
index dd80e591..4ebdf588 100644
--- a/src/PdfSharp/Pdf.Advanced/PdfResources.cs
+++ b/src/PdfSharp/Pdf.Advanced/PdfResources.cs
@@ -185,7 +185,7 @@ public string AddShading(PdfShading shading)
         /// <summary>
         /// Gets the fonts map.
         /// </summary>
-        internal PdfResourceMap Fonts
+        public PdfResourceMap Fonts
         {
             get { return _fonts ?? (_fonts = (PdfResourceMap)Elements.GetValue(Keys.Font, VCF.Create)); }
         }
@@ -194,14 +194,17 @@ internal PdfResourceMap Fonts
         /// <summary>
         /// Gets the external objects map.
         /// </summary>
-        internal PdfResourceMap XObjects
+        public PdfResourceMap XObjects
         {
             get { return _xObjects ?? (_xObjects = (PdfResourceMap)Elements.GetValue(Keys.XObject, VCF.Create)); }
         }
         PdfResourceMap _xObjects;
 
+        /// <summary>
+        /// 
+        /// </summary>
         // TODO: make own class
-        internal PdfResourceMap ExtGStates
+        public PdfResourceMap ExtGStates
         {
             get
             {
@@ -210,29 +213,41 @@ internal PdfResourceMap ExtGStates
         }
         PdfResourceMap _extGStates;
 
+        /// <summary>
+        /// 
+        /// </summary>
         // TODO: make own class
-        internal PdfResourceMap ColorSpaces
+        public PdfResourceMap ColorSpaces
         {
             get { return _colorSpaces ?? (_colorSpaces = (PdfResourceMap)Elements.GetValue(Keys.ColorSpace, VCF.Create)); }
         }
         PdfResourceMap _colorSpaces;
 
+        /// <summary>
+        /// 
+        /// </summary>
         // TODO: make own class
-        internal PdfResourceMap Patterns
+        public PdfResourceMap Patterns
         {
             get { return _patterns ?? (_patterns = (PdfResourceMap) Elements.GetValue(Keys.Pattern, VCF.Create)); }
         }
         PdfResourceMap _patterns;
 
+        /// <summary>
+        /// 
+        /// </summary>
         // TODO: make own class
-        internal PdfResourceMap Shadings
+        public PdfResourceMap Shadings
         {
             get { return _shadings ?? (_shadings = (PdfResourceMap) Elements.GetValue(Keys.Shading, VCF.Create)); }
         }
         PdfResourceMap _shadings;
 
+        /// <summary>
+        /// 
+        /// </summary>
         // TODO: make own class
-        internal PdfResourceMap Properties
+        public PdfResourceMap Properties
         {
             get {return _properties ?? (_properties = (PdfResourceMap) Elements.GetValue(Keys.Properties, VCF.Create));}
         }
diff --git a/src/PdfSharp/root/ProductVersionInfo.cs b/src/PdfSharp/root/ProductVersionInfo.cs
index 0e284769..112d836e 100644
--- a/src/PdfSharp/root/ProductVersionInfo.cs
+++ b/src/PdfSharp/root/ProductVersionInfo.cs
@@ -115,7 +115,7 @@ public static class ProductVersionInfo
         /// <summary>
         /// The build number of the product.
         /// </summary>
-        public const string VersionBuild = "5185";  // V16G // Build = days since 2005-01-01  -  change this values ONLY HERE
+        public const string VersionBuild = "5911";  // V16G // Build = days since 2005-01-01  -  change this values ONLY HERE
 
         /// <summary>
         /// The patch number of the product.
diff --git a/src/PdfSharp/root/VersionInfo.cs b/src/PdfSharp/root/VersionInfo.cs
index 9fed5912..4204023a 100644
--- a/src/PdfSharp/root/VersionInfo.cs
+++ b/src/PdfSharp/root/VersionInfo.cs
@@ -32,7 +32,7 @@ namespace PdfSharp
     /// <summary>
     /// Version info of this assembly.
     /// </summary>
-    static class VersionInfo
+    internal static class VersionInfo
     {
         public const string Title = ProductVersionInfo.Title;
         public const string Description = ProductVersionInfo.Description;