diff --git a/X10D/StructExtensions.cs b/X10D/StructExtensions.cs
index 1ffeff1..f23cac8 100644
--- a/X10D/StructExtensions.cs
+++ b/X10D/StructExtensions.cs
@@ -7,10 +7,18 @@
     #endregion
 
     /// <summary>
-    /// A set of extension methods for <see langword="struct"/> types.
+    /// Extension methods for <see langword="struct"/> types.
     /// </summary>
     public static class StructExtensions
     {
+        /// <summary>
+        /// Returns the next value in an <see cref="Enum"/> using the specified value as a starting point.
+        /// </summary>
+        /// <typeparam name="T">An <see cref="Enum"/>.</typeparam>
+        /// <param name="src">An <see cref="Enum"/> value</param>
+        /// <param name="wrap">Optional. Whether or not to wrap to the to the start of the enum. Defaults to
+        /// true.</param>
+        /// <returns>Returns a <see cref="T"/> value.</returns>
         public static T Next<T>(this T src, bool wrap = true) where T : struct
         {
             if (!typeof(T).IsEnum)
@@ -23,6 +31,14 @@
             return arr.Length == j ? arr[wrap ? 0 : j - 1] : arr[j];
         }
 
+        /// <summary>
+        /// Returns the previous value in an <see cref="Enum"/> using the specified value as a starting point.
+        /// </summary>
+        /// <typeparam name="T">An <see cref="Enum"/>.</typeparam>
+        /// <param name="src">An <see cref="Enum"/> value</param>
+        /// <param name="wrap">Optional. Whether or not to wrap to the to the end of the enum. Defaults to
+        /// true.</param>
+        /// <returns>Returns a <see cref="T"/> value.</returns>
         public static T Previous<T>(this T src, bool wrap = true) where T : struct
         {
             if (!typeof(T).IsEnum)