diff --git a/debug_cli/DbgCliNode.h b/debug_cli/DbgCliNode.h
index e11c0c8..1ec5801 100644
--- a/debug_cli/DbgCliNode.h
+++ b/debug_cli/DbgCliNode.h
@@ -8,6 +8,9 @@
 #ifndef PLAT_DEBUG_CLI_DBGCLINODE_H_
 #define PLAT_DEBUG_CLI_DBGCLINODE_H_
 
+/**
+ * Composite Pattern: Abstract Node Class, acts as the Interface to the object tree.
+ */
 class DbgCli_Node
 {
 protected: // abstract class - constructor must not be accessible
diff --git a/debug_cli/DbgCliTopic.cpp b/debug_cli/DbgCliTopic.cpp
index f652e31..8ebf20a 100644
--- a/debug_cli/DbgCliTopic.cpp
+++ b/debug_cli/DbgCliTopic.cpp
@@ -19,6 +19,8 @@ DbgCli_Topic* DbgCli_Topic::RootNode()
 
 DbgCli_Topic::DbgCli_Topic(const char* parentPath, const char* nodeName, const char* helpText)
 : DbgCli_Node(parentPath, nodeName, helpText)
+, m_child(0)
+, m_sibling(0)
 { }
 
 DbgCli_Topic::~DbgCli_Topic()
@@ -27,6 +29,8 @@ DbgCli_Topic::~DbgCli_Topic()
 void DbgCli_Topic::addNode(DbgCli_Node* node)
 {
   // TODO: search the parent node according to the provided parentPath given by the node object.
+  const char* parentPath = node->getParentPath();
+
 }
 
 DbgCli_Node* DbgCli_Topic::getNode(const char* cmdPath, unsigned int cmdPathStrLen)
@@ -40,3 +44,14 @@ void DbgCli_Topic::execute(unsigned int arg_cnt, char* args[], unsigned int idxT
   // TODO: Finds its path according to the args array's tokens.
   // TODO: Calls the execute method of the right child node if found, increments the index to the first parameter to handle accordingly.
 }
+
+void DbgCli_Topic::addChildNode(DbgCli_Node* node)
+{
+  DbgCli_Topic* tmpTopic = m_child;
+  while (0 != tmpTopic)
+  {
+    tmpTopic = tmpTopic->m_sibling;
+  }
+  tmpTopic->addNode(node);
+}
+
diff --git a/debug_cli/DbgCliTopic.h b/debug_cli/DbgCliTopic.h
index de51598..aa3ca61 100644
--- a/debug_cli/DbgCliTopic.h
+++ b/debug_cli/DbgCliTopic.h
@@ -11,7 +11,7 @@
 #include <DbgCliNode.h>
 
 /**
- * This is the Compositum part of the Composite Pattern.
+ * This is the Composite part of the Composite Pattern.
  */
 class DbgCli_Topic: public DbgCli_Node
 {
@@ -44,9 +44,15 @@ class DbgCli_Topic: public DbgCli_Node
    */
   virtual void execute(unsigned int argc, char* args[], unsigned int idxToFirstArgToHandle);
 
+private:
+  void addChildNode(DbgCli_Node* node);
+  DbgCli_Node* getChildNode(const char* childNodeName);
+
 private:
   static DbgCli_Topic* s_rootNode;
 
+  DbgCli_Node* m_child;
+  DbgCli_Node* m_sibling;
 
 private: // forbidden default functions
   DbgCli_Topic& operator= (const DbgCli_Topic& src);  // assignment operator