Index: trunk/src/scriptbuilder/gui/ScriptBuilderFrame.java
===================================================================
--- trunk/src/scriptbuilder/gui/ScriptBuilderFrame.java	(revision 8)
+++ trunk/src/scriptbuilder/gui/ScriptBuilderFrame.java	(revision 11)
@@ -2267,7 +2267,7 @@
     private void fileOpenActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_fileOpenActionPerformed
         JFileChooser fc = new JFileChooser();
-        fc.setFileFilter(new ExtensionFileFilter("Simulation Script (.sim)", new String[]
-        {
-            "sim"
+        fc.setFileFilter(new ExtensionFileFilter("Simulation Script (.xml)", new String[]
+        {
+            "xml"
         }));
         fc.showOpenDialog(this);
@@ -2282,7 +2282,7 @@
     private void fileSaveAsActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_fileSaveAsActionPerformed
         JFileChooser fc = new JFileChooser();
-        fc.setFileFilter(new ExtensionFileFilter("Simulation Script (.sim)", new String[]
-        {
-            "sim"
+        fc.setFileFilter(new ExtensionFileFilter("Simulation Script (.xml)", new String[]
+        {
+            "xml"
         }));
         fc.showSaveDialog(this);
@@ -2297,7 +2297,7 @@
     private void fileSaveActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_fileSaveActionPerformed
         JFileChooser fc = new JFileChooser();
-        fc.setFileFilter(new ExtensionFileFilter("Simulation Script (.sim)", new String[]
-        {
-            "sim"
+        fc.setFileFilter(new ExtensionFileFilter("Simulation Script (.xml)", new String[]
+        {
+            "xml"
         }));
         fc.showSaveDialog(this);
@@ -2742,5 +2742,8 @@
         script.loadScriptFromFile(fc.getSelectedFile());
     }//GEN-LAST:event_XMLImportBtnActionPerformed
-
+    /* Help > About simply displays the current SVN revision number so
+     * the user can determine which version of the source code was used to
+     * build the executable she is running.
+     */
     private void helpAboutActionPerformed(java.awt.event.ActionEvent evt)//GEN-FIRST:event_helpAboutActionPerformed
     {//GEN-HEADEREND:event_helpAboutActionPerformed
@@ -2760,4 +2763,5 @@
         String propKey = "Application.revision";
         String version = "unknown";
+        // Load the application properties (created by build.xml)
         try
         {