diff --git a/ObservatoryFramework/PluginUI.cs b/ObservatoryFramework/PluginUI.cs
index 97e3c5d..e924fb7 100644
--- a/ObservatoryFramework/PluginUI.cs
+++ b/ObservatoryFramework/PluginUI.cs
@@ -6,29 +6,74 @@ using System.Threading.Tasks;
 
 namespace Observatory.Framework
 {
+    /// <summary>
+    /// Class permitting plugins to provide their UI, if any, to Observatory Core.
+    /// </summary>
     public class PluginUI
     {
+        /// <summary>
+        /// Type of UI used by plugin.
+        /// </summary>
         public readonly UIType PluginUIType;
+
+        /// <summary>
+        /// <para>UI object used by plugins with UIType.Avalonia.</para>
+        /// <para>(Untested/not implemented)</para>
+        /// </summary>
         public object UI;
+
+        /// <summary>
+        /// <para>Collection bound to DataGrid used byu plugins with UIType.Basic.</para>
+        /// <para>Objects in collection should be of a class defined within the plugin consisting of string properties.<br/>Each object is a single row, and the property names are used as column headers.</para>
+        /// </summary>
         public ObservableCollection<object> DataGrid;
-        
+
+        /// <summary>
+        /// Instantiate PluginUI of UIType.Basic.
+        /// </summary>
+        /// <param name="DataGrid">
+        /// <para>Collection bound to DataGrid used byu plugins with UIType.Basic.</para>
+        /// <para>Objects in collection should be of a class defined within the plugin consisting of string properties.<br/>Each object is a single row, and the property names are used as column headers.</para>
+        /// </param>
         public PluginUI(ObservableCollection<object> DataGrid)
         {
             PluginUIType = UIType.Basic;
             this.DataGrid = DataGrid;
         }
 
+        /// <summary>
+        /// Instantiate PluginUI of specified UIType.
+        /// <para>(Untested/not implemented)</para>
+        /// </summary>
+        /// <param name="uiType">UIType for plugin.</param>
+        /// <param name="UI">Avalonia control to place in plugin tab.</param>
         public PluginUI(UIType uiType, object UI)
         {
             PluginUIType = uiType;
             this.UI = UI;
         }
 
+        /// <summary>
+        /// Options for plugin UI types.
+        /// </summary>
         public enum UIType
         {
+            /// <summary>
+            /// No UI. Tab will not be added to list.
+            /// </summary>
             None = 0,
+            /// <summary>
+            /// Simple DataGrid, to which items can be added or removed.
+            /// </summary>
             Basic = 1,
+            /// <summary>
+            /// AvaloniaUI control which is placed in plugin tab.
+            /// </summary>
             Avalonia = 2,
+            /// <summary>
+            /// UI used by Observatory Core settings tab.<br/>
+            /// Not intended for use by plugins.
+            /// </summary>
             Core = 3
         }
     }