Fixed to allow search of selected multiple return RO value

Added comments

PROMS/Volian.Controls.Library/DisplaySearch.cs

@@ -975,7 +975,7 @@ namespace Volian.Controls.Library
 			}
 			return rtnVal;
 		}
-
+		// Same funtion as GetROChildren in DisplayReport.cs
 		private string GetROsToSearch(ROFSTLookup.rochild[] chld)
 		{
 			string rtnstr = "";
@@ -983,7 +983,7 @@ namespace Volian.Controls.Library
 			{
 				ROFSTLookup.rochild ro = (ROFSTLookup.rochild)cmboTreeROs.SelectedNode.Tag;
 				rtnstr += string.Format("{0}", ro.roid);
-				if (rtnstr.Length == 12) rtnstr += "0000";
+				if (rtnstr.Length == 12) rtnstr += "0000"; // last four digits are used for multiple return values
 			}
 			else
 			{ // spin through the child list and get the ROIDs.