diff --git a/itext/itext.io/itext/io/colors/IccProfile.cs b/itext/itext.io/itext/io/colors/IccProfile.cs
index 3eecbd3b8..956790722 100644
--- a/itext/itext.io/itext/io/colors/IccProfile.cs
+++ b/itext/itext.io/itext/io/colors/IccProfile.cs
@@ -27,7 +27,7 @@ You should have received a copy of the GNU Affero General Public License
 using iText.IO.Source;
 
 namespace iText.IO.Colors {
-    /// <summary>Class used to represented the International Color Consortium profile</summary>
+    /// <summary>Class used to represent the International Color Consortium profile</summary>
     public class IccProfile {
         protected internal byte[] data;
 
@@ -35,6 +35,7 @@ public class IccProfile {
 
         private static IDictionary<String, int?> cstags = new Dictionary<String, int?>();
 
+        /// <summary>Creates a new, empty icc profile.</summary>
         protected internal IccProfile() {
         }
 
diff --git a/itext/itext.io/itext/io/exceptions/FontCompressionException.cs b/itext/itext.io/itext/io/exceptions/FontCompressionException.cs
index 83cd4e9ad..c94e6e84f 100644
--- a/itext/itext.io/itext/io/exceptions/FontCompressionException.cs
+++ b/itext/itext.io/itext/io/exceptions/FontCompressionException.cs
@@ -24,14 +24,34 @@ You should have received a copy of the GNU Affero General Public License
 using iText.Commons.Exceptions;
 
 namespace iText.IO.Exceptions {
+    /// <summary>General compressed font parsing exception.</summary>
     public class FontCompressionException : ITextException {
+        /// <summary>
+        /// Creates a new
+        /// <see cref="FontCompressionException"/>.
+        /// </summary>
         public FontCompressionException() {
         }
 
+        /// <summary>
+        /// Creates a new
+        /// <see cref="FontCompressionException"/>.
+        /// </summary>
+        /// <param name="message">the detail message</param>
         public FontCompressionException(String message)
             : base(message) {
         }
 
+        /// <summary>
+        /// Creates a new
+        /// <see cref="FontCompressionException"/>.
+        /// </summary>
+        /// <param name="message">the detail message</param>
+        /// <param name="cause">
+        /// the cause (which is saved for later retrieval by
+        /// <see cref="System.Exception.InnerException()"/>
+        /// method)
+        /// </param>
         public FontCompressionException(String message, Exception cause)
             : base(message, cause) {
         }
diff --git a/itext/itext.io/itext/io/font/constants/FontResources.cs b/itext/itext.io/itext/io/font/constants/FontResources.cs
index 344ef96b0..bb0ed41b4 100644
--- a/itext/itext.io/itext/io/font/constants/FontResources.cs
+++ b/itext/itext.io/itext/io/font/constants/FontResources.cs
@@ -23,6 +23,7 @@ You should have received a copy of the GNU Affero General Public License
 using System;
 
 namespace iText.IO.Font.Constants {
+    /// <summary>Font resources paths.</summary>
     public sealed class FontResources {
         private FontResources() {
         }
diff --git a/itext/itext.io/itext/io/font/constants/FontStretches.cs b/itext/itext.io/itext/io/font/constants/FontStretches.cs
index 22e779ab6..1d455c9bb 100644
--- a/itext/itext.io/itext/io/font/constants/FontStretches.cs
+++ b/itext/itext.io/itext/io/font/constants/FontStretches.cs
@@ -23,6 +23,7 @@ You should have received a copy of the GNU Affero General Public License
 using System;
 
 namespace iText.IO.Font.Constants {
+    /// <summary>Font stretch constants and ids</summary>
     public sealed class FontStretches {
         private FontStretches() {
         }
diff --git a/itext/itext.io/itext/io/font/constants/FontStyles.cs b/itext/itext.io/itext/io/font/constants/FontStyles.cs
index 2c9f63e0a..37bd8ea84 100644
--- a/itext/itext.io/itext/io/font/constants/FontStyles.cs
+++ b/itext/itext.io/itext/io/font/constants/FontStyles.cs
@@ -21,6 +21,7 @@ You should have received a copy of the GNU Affero General Public License
 along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 namespace iText.IO.Font.Constants {
+    /// <summary>Font styles ids</summary>
     public sealed class FontStyles {
         private FontStyles() {
         }
diff --git a/itext/itext.io/itext/io/font/constants/FontWeights.cs b/itext/itext.io/itext/io/font/constants/FontWeights.cs
index 15385a217..f48d4be71 100644
--- a/itext/itext.io/itext/io/font/constants/FontWeights.cs
+++ b/itext/itext.io/itext/io/font/constants/FontWeights.cs
@@ -23,6 +23,7 @@ You should have received a copy of the GNU Affero General Public License
 using System;
 
 namespace iText.IO.Font.Constants {
+    /// <summary>Font weight values and utility methods</summary>
     public sealed class FontWeights {
         private FontWeights() {
         }
@@ -54,6 +55,9 @@ private FontWeights() {
         // Font weight Black (Heavy)
         public const int BLACK = 900;
 
+        /// <summary>Parses font weight constant to corresponding value.</summary>
+        /// <param name="weight">weight constant</param>
+        /// <returns>corresponding weight int value</returns>
         public static int FromType1FontWeight(String weight) {
             int fontWeight = NORMAL;
             switch (weight.ToLowerInvariant()) {
@@ -119,6 +123,20 @@ public static int FromType1FontWeight(String weight) {
             return fontWeight;
         }
 
+        /// <summary>
+        /// Normalize font weight to either
+        /// <see cref="THIN"/>
+        /// or
+        /// <see cref="BLACK"/>.
+        /// </summary>
+        /// <param name="fontWeight">font weight int value</param>
+        /// <returns>
+        /// either
+        /// <see cref="THIN"/>
+        /// or
+        /// <see cref="BLACK"/>
+        /// based on a given weight value
+        /// </returns>
         public static int NormalizeFontWeight(int fontWeight) {
             fontWeight = (fontWeight / 100) * 100;
             if (fontWeight < iText.IO.Font.Constants.FontWeights.THIN) {
diff --git a/port-hash b/port-hash
index 6d243a4b2..91c4d4d21 100644
--- a/port-hash
+++ b/port-hash
@@ -1 +1 @@
-dfcc46546d23280484f6c391364b455879cadb5d
+2eca9207caa3e4bbf69409e58168ce59a6cd1c64