--- a/ServerMonitor/Controls/TimeUnitsComboBox.cs	Sat Mar 09 20:14:03 2019 -0500
+++ b/ServerMonitor/Controls/TimeUnitsComboBox.cs	Mon Apr 08 21:29:54 2019 -0400
@@ -1,16 +1,14 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Windows.Forms;
+using System.Windows.Forms;
 
 namespace ServerMonitorApp
 {
+    /// <summary>Combo box containing options for time units.</summary>
     class TimeUnitsComboBox : ComboBox
     {
         protected override void OnCreateControl()
         {
             base.OnCreateControl();
+            // Clear the items to prevent duplicates added at design time and run time.
             Items.Clear();
             Items.Add("minutes");
             Items.Add("hours");
@@ -19,5 +17,6 @@
         }
     }
 
+    /// <summary>Time units.</summary>
     public enum TimeUnits { Minute = 0, Hour = 1, Day = 2 }
 }