reorg wrt make implicit rules and custom versions of <whatever>

custom-03d1-datagrid/CustomApp.as

@@ -0,0 +1,22 @@
+package
+{
+    import mx.core.Application;
+    import mx.controls.Alert;
+    import flash.events.MouseEvent;
+
+    public class CustomApp extends Application
+    {
+
+        function CustomApp()
+        {
+        }
+
+        public function butterCup(event:MouseEvent):void
+        {
+            var msg:String = "clicked" + event;
+            trace(msg);
+            Alert.show(msg);
+        }
+
+    }
+}

custom-03d1-datagrid/Snarf.mxml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<loc:CustomApp xmlns:mx="http://www.adobe.com/2006/mxml"
+    xmlns:loc="*" layout="absolute">
+    <mx:Button id="mutton" label="howdy" click="butterCup(event)" />
+</loc:CustomApp>