diff --git a/oxygen/js-require/commons.js b/oxygen/js-require/commons.js
index 3881b20..92a7d4d 100644
--- a/oxygen/js-require/commons.js
+++ b/oxygen/js-require/commons.js
@@ -5,61 +5,39 @@
  *
  */
 
+/* 
+ * Shortcuts aka imports
+ */
 out = Packages.java.lang.System.out;
-
-out.println('commons.js');
-
-__required__ = {
-};
-
 CommonsOperationsUtil = Packages.ro.sync.ecss.extensions.commons.operations.CommonsOperationsUtil;
 
+
+/* 
+ * Function require
+ * 
+ */
 require = function (filepath) {
 	// Check if the object has been initialized
-	if (Object.keys(__required__).length == 0) {
+	if (Object.keys(require).length == 0) {
 		var currentPath = CommonsOperationsUtil.expandAndResolvePath(authorAccess, 'commons.js');
-		__required__.baseURIs =[currentPath];
-		__required__.required = {
+		require.urisStack =[currentPath];
+		require.urisSet = {
 		};
-		__required__.required[currentPath] = true;
+		require.urisSet[currentPath] = true;
 	}
-	var currentFilePath = __required__.baseURIs[__required__.baseURIs.length - 1];
-	out.println('filepath: ' + filepath);
-	out.println('current filepath: ' + currentFilePath);
+	var currentFilePath = require.urisStack[require.urisStack.length - 1];
 	var currentURI = new java.net.URI(currentFilePath);
 	var targetURI = currentURI.resolve(filepath);
 	filepath = targetURI.toString();
-	out.println('filepath: ' + filepath);
-	if (__required__.required[filepath] == undefined) {
-		__required__.baseURIs.push(filepath);
-		__required__.required[filepath] = true;
+	if (require.urisSet[filepath] == undefined) {
+		require.urisStack.push(filepath);
+		require.urisSet[filepath] = true;
 		var uri = new java.net.URI(filepath);
-		out.println('New, inclusion needed: ' + uri.toString());
+		out.println('Including ' + uri.toString());
 		var text = new java.lang.String(java.nio.file.Files.readAllBytes( java.nio.file.Paths.get(targetURI) ));
 		text = String(text);
 		eval(text);
-		__required__.baseURIs.pop();
+		require.urisStack.pop();
 	}
 }
 
-startDebugger = function () {
-	
-	var runnable = {
-		run: function () {
-			main.dispose();
-		}
-	}
-	
-	
-	var context = Packages.org.mozilla.javascript.Context.getCurrentContext();
-	// Within the current context...
-	var contextFactory = context.getFactory();
-	var scope = Packages.org.mozilla.javascript.tools.shell.Environment(runnable.__parent__);
-	// and the scope of the runnable variable's parent ...
-	var main = Packages.org.mozilla.javascript.tools. debugger.Main.mainEmbedded(contextFactory, scope, 'Debugger');
-	// start a debugging session ...
-	main.setExitAction(java.lang.Runnable(runnable));
-	// , clean the resources at exit time...
-	main.setVisible(true);
-	// and make it visible/
-}
\ No newline at end of file
diff --git a/oxygen/js-require/hello.js b/oxygen/js-require/hello.js
index 320466e..5e9ad3e 100644
--- a/oxygen/js-require/hello.js
+++ b/oxygen/js-require/hello.js
@@ -1,5 +1,6 @@
 require('hello.js'); 
 require('./commons.js'); 
+require('subdir/child.js');
 
 hello = function (){ 
     Packages.java.lang.System.out.println("Hello world.");
diff --git a/oxygen/js-require/sdf.framework b/oxygen/js-require/sdf.framework
index 55a95a1..2648cbd 100644
--- a/oxygen/js-require/sdf.framework
+++ b/oxygen/js-require/sdf.framework
@@ -795,7 +795,7 @@
 															<entry>
 																<String>script</String>
 																<String>doOperation = function () {
-//  include('debugger.js');
+  require('debugger.js');
   startDebugger();
 }
 </String>
diff --git a/oxygen/js-require/subdir/child.js b/oxygen/js-require/subdir/child.js
new file mode 100644
index 0000000..e118807
--- /dev/null
+++ b/oxygen/js-require/subdir/child.js
@@ -0,0 +1,4 @@
+out.println('message from the subdir: ' + filepath);
+require('../hello.js'); 
+require('../commons.js'); 
+require('child.js');