--- a/ServerMonitor/Controls/CheckControl.cs	Sat Mar 09 20:14:03 2019 -0500
+++ b/ServerMonitor/Controls/CheckControl.cs	Mon Apr 08 21:29:54 2019 -0400
@@ -1,18 +1,16 @@
 using System;
 using System.Collections.Generic;
-using System.ComponentModel;
-using System.Drawing;
 using System.Data;
 using System.Linq;
-using System.Text;
 using System.Windows.Forms;
 
 namespace ServerMonitorApp
 {
-    /// <summary>Base class for check controls</summary>
+    /// <summary>Base class for check controls.</summary>
     /// <remarks>This control should never be used directly, but marking it abstract causes problems with the designer.</remarks>
     public partial class CheckControl : UserControl
     {
+        /// <summary>Type of the check this control can edit.</summary>
         public Type CheckType => GetCheckType(GetType());
 
         public CheckControl()
@@ -24,6 +22,8 @@
         {
             CheckGroupBox.Text = Helpers.GetDisplayName(CheckType);
 
+            // Bind change listeners to checkboxes to enable or disable a panel of controls.
+            // The leftmost checkbox is assumed to be the "master switch" for the panel.
             IEnumerable<Panel> panels = CheckGroupBox.Controls.OfType<Panel>();
             foreach (Panel panel in panels)
             {
@@ -41,6 +41,8 @@
             DisablePanelByCheckBox((CheckBox)sender);
         }
 
+        /// <summary>Enables or disables all sibling controls of a checkbox.</summary>
+        /// <param name="checkBox">The checkbox to disable or enable the sibling controls of.</param>
         private void DisablePanelByCheckBox(CheckBox checkBox)
         {
             foreach (Control control in checkBox.Parent.Controls)
@@ -50,16 +52,24 @@
             }
         }
 
+        /// <summary>Sets the values of the controls from a check's properties.</summary>
+        /// <remarks>Subclasses should implement this method. Marking as abstract causes problems with the designer.</remarks>
         public virtual void LoadCheck(Check check) { }
 
+        /// <summary>Updates the properties of a check from user input.</summary>
+        /// <remarks>Subclasses should implement this method. Marking as abstract causes problems with the designer.</remarks>
         public virtual void UpdateCheck(Check check) { }
 
+        /// <summary>Creates an instance of a check control based on a check type.</summary>
         public static CheckControl Create(Type CheckType)
         {
+            // Use reflection to find a check control that declares it handles the given type.
             Type checkControlType = typeof(CheckControl).Assembly.GetTypes().FirstOrDefault(t => GetCheckType(t) == CheckType);
+            // If one was found, instantiate it.
             return checkControlType == null ? null : (CheckControl)Activator.CreateInstance(checkControlType);
         }
 
+        /// <summary>Gets the value of the CheckTypeAttribute for a type.</summary>
         private static Type GetCheckType(Type type)
         {
             return type.GetAttribute<CheckTypeAttribute>()?.CheckType;