diff --git a/ktapi/ktapi.inc.php b/ktapi/ktapi.inc.php
index f308a73..c2e8fe4 100644
--- a/ktapi/ktapi.inc.php
+++ b/ktapi/ktapi.inc.php
@@ -60,6 +60,10 @@ require_once(KTAPI_DIR .'/KTAPIAcl.inc.php');
 require_once(KTAPI_DIR .'/KTAPICollection.inc.php');
 require_once(KTAPI_DIR .'/KTAPIBulkActions.inc.php');
 
+//$dir = dirname(__FILE__) . DIRECTORY_SEPARATOR . '..';
+//$dir = realpath($dir).DIRECTORY_SEPARATOR;
+//require_once($dir . 'plugins/wintools/baobabkeyutil.inc.php');
+//require_once($dir . 'plugins/electronic-signatures/Esignature.inc.php');
 
 /**
 * This class defines functions that MUST exist in the inheriting class
@@ -171,6 +175,13 @@ class KTAPI
 
 	protected $version = 3;
 
+    private $esig_enabled;
+
+    public function KTAPI()
+    {
+        $this->esig_enabled = $this->electronic_sig_enabled();
+    }
+
  	/**
  	* This returns the current session.
  	*
@@ -349,7 +360,12 @@ class KTAPI
 	* @param int
 	*
 	*/
-	public function add_folder_user_permissions($username, $folder_id, $namespace) {
+	public function add_folder_user_permissions($username, $folder_id, $namespace, $sig_username = '', $sig_password = '', $reason = '')
+    {
+        $response = $this->_check_electronic_signature($folder_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.permissions_change');
+        if ($response['status_code'] == 1) return $response;
+
 		if (is_null($this->session))
 		{
 			return array(
@@ -417,7 +433,12 @@ class KTAPI
 	* @param int
 	*
 	*/
-	public function add_folder_role_permissions($role, $folder_id, $namespace) {
+	public function add_folder_role_permissions($role, $folder_id, $namespace, $sig_username = '', $sig_password = '', $reason = '')
+    {
+        $response = $this->_check_electronic_signature($folder_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.permissions_change');
+        if ($response['status_code'] == 1) return $response;
+
 		if (is_null($this->session))
 		{
 			return array(
@@ -478,7 +499,12 @@ class KTAPI
 	* @param int
 	*
 	*/
-	public function add_folder_group_permissions($group, $folder_id, $namespace) {
+	public function add_folder_group_permissions($group, $folder_id, $namespace, $sig_username = '', $sig_password = '', $reason = '')
+    {
+        $response = $this->_check_electronic_signature($folder_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.permissions_change');
+        if ($response['status_code'] == 1) return $response;
+
 		if (is_null($this->session))
 		{
 			return array(
@@ -530,9 +556,6 @@ class KTAPI
 		$permissions->save();
 	}
 
-
-
-
 	/**
  	* This checks if a user can access an object with a certain permission.
  	*
@@ -711,7 +734,6 @@ class KTAPI
 		return $session;
 	}
 
-
 	/**
 	* start a root session.
 	*
@@ -738,8 +760,6 @@ class KTAPI
 		return $session;
 	}
 
-
-
 	/**
 	* Starts an anonymous session.
  	*
@@ -1048,7 +1068,6 @@ class KTAPI
 		return $results;
 	}
 
-
 	/**
     * Returns an array of username/name combinations or an error object.
 	*
@@ -1213,8 +1232,13 @@ class KTAPI
      * @param integer $target_folder_id The id of the target folder if required - copy and move require this.
      * @return array The response array. On success response['results'] will be empty | contain an array of failed items.
      */
-    public function performBulkAction($action, $items, $reason = '', $target_folder_id = null)
+    public function performBulkAction($action, $items, $reason = '', $target_folder_id = null,
+                                      $sig_username = '', $sig_password = '')
     {
+        $response = $this->_check_electronic_signature($target_folder_id, $sig_username, $sig_password, $reason, $reason,
+                                                       'ktcore.transactions.permissions_change');
+        if ($response['status_code'] == 1) return $response;
+        
         $response['status_code'] = 1;
 
         if(!is_array($items)){
@@ -1474,8 +1498,12 @@ class KTAPI
      * @param integer $user_id The id of the user to be added
      * @return array Response
      */
-    public function add_user_to_role_on_folder($folder_id, $role_id, $user_id)
+    public function add_user_to_role_on_folder($folder_id, $role_id, $user_id, $sig_username = '', $sig_password = '', $reason = '')
     {
+        $response = $this->_check_electronic_signature($folder_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.role_allocations_change');
+        if ($response['status_code'] == 1) return $response;
+
         $response['status_code'] = 1;
         if(!is_numeric($user_id)){
             $response['message'] = _kt('User id must be numeric.');
@@ -1496,8 +1524,12 @@ class KTAPI
      * @param integer $group_id The id of the group to be added
      * @return array Response
      */
-    public function add_group_to_role_on_folder($folder_id, $role_id, $group_id)
+    public function add_group_to_role_on_folder($folder_id, $role_id, $group_id, $sig_username = '', $sig_password = '', $reason = '')
     {
+        $response = $this->_check_electronic_signature($folder_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.role_allocations_change');
+        if ($response['status_code'] == 1) return $response;
+
         $response['status_code'] = 1;
         if(!is_numeric($group_id)){
             $response['message'] = _kt('Group id must be numeric.');
@@ -1518,8 +1550,12 @@ class KTAPI
      * @param integer $user_id The id of the user to be removed
      * @return array Response
      */
-    public function remove_user_from_role_on_folder($folder_id, $role_id, $user_id)
+    public function remove_user_from_role_on_folder($folder_id, $role_id, $user_id, $sig_username = '', $sig_password = '', $reason = '')
     {
+        $response = $this->_check_electronic_signature($folder_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.role_allocations_change');
+        if ($response['status_code'] == 1) return $response;
+
         $response['status_code'] = 1;
         if(!is_numeric($user_id)){
             $response['message'] = _kt('User id must be numeric.');
@@ -1540,8 +1576,12 @@ class KTAPI
      * @param integer $group_id The id of the group to be removied
      * @return array Response
      */
-    public function remove_group_from_role_on_folder($folder_id, $role_id, $group_id)
+    public function remove_group_from_role_on_folder($folder_id, $role_id, $group_id, $sig_username = '', $sig_password = '', $reason = '')
     {
+        $response = $this->_check_electronic_signature($folder_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.role_allocations_change');
+        if ($response['status_code'] == 1) return $response;
+
         $response['status_code'] = 1;
         if(!is_numeric($group_id)){
             $response['message'] = _kt('Group id must be numeric.');
@@ -1593,8 +1633,13 @@ class KTAPI
      * @param string $update The type of modification - add | remove
      * @return array Response
      */
-    private function update_members_on_role_on_folder($folder_id, $role_id, $members, $update = 'add')
+    private function update_members_on_role_on_folder($folder_id, $role_id, $members, $update = 'add', 
+                                                      $sig_username = '', $sig_password = '', $reason = '')
     {
+        $response = $this->_check_electronic_signature($folder_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.role_allocations_change');
+        if ($response['status_code'] == 1) return $response;
+
         // Check input information
         $response['status_code'] = 1;
         if(!is_numeric($folder_id)){
@@ -1740,8 +1785,12 @@ class KTAPI
      * @param integer $role_id Optional. The id of the role being reset.
      * @return array Response
      */
-    public function remove_all_role_allocation_from_folder($folder_id, $role_id = null)
+    public function remove_all_role_allocation_from_folder($folder_id, $role_id = null, $sig_username = '', $sig_password = '', $reason = '')
     {
+        $response = $this->_check_electronic_signature($folder_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.role_allocations_change');
+        if ($response['status_code'] == 1) return $response;
+
         $response['status_code'] = 1;
 
         // Get folder and role objects
@@ -1778,8 +1827,12 @@ class KTAPI
      * @param integer $folder_id The folder id
      * @return array Response
      */
-    public function override_role_allocation_on_folder($folder_id)
+    public function override_role_allocation_on_folder($folder_id, $sig_username = '', $sig_password = '', $reason = '')
     {
+        $response = $this->_check_electronic_signature($folder_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.role_allocations_change');
+        if ($response['status_code'] == 1) return $response;
+
         $response['status_code'] = 1;
 
         // Get folder object
@@ -1829,7 +1882,6 @@ class KTAPI
 
     /* *** Refactored web services functions *** */
 
-
     /**
      * Creates a new anonymous session.
      *
@@ -2022,8 +2074,12 @@ class KTAPI
      * @param string $folder_name The name of the new folder
      * @return array Response 'results' contains kt_folder_detail | 'message' contains error message on failure
      */
-    function create_folder($folder_id, $folder_name)
+    function create_folder($folder_id, $folder_name, $sig_username = '', $sig_password = '', $reason = '')
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.add');
+        if ($response['status_code'] == 1) return $response;
+
         $folder = &$this->get_folder_by_id($folder_id);
     	if (PEAR::isError($folder))
     	{
@@ -2047,8 +2103,12 @@ class KTAPI
      * @param integer $source_folder_id Id of the folder to which the shortcut will point.
      * @return array Response 'results' contains kt_shortcut_detail | 'message' contains error message on failure
      */
-    function create_folder_shortcut($target_folder_id, $source_folder_id)
+    function create_folder_shortcut($target_folder_id, $source_folder_id, $sig_username = '', $sig_password = '', $reason = '')
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.create_shortcut');
+        if ($response['status_code'] == 1) return $response;
+        
         $folder = &$this->get_folder_by_id($target_folder_id);
     	if (PEAR::isError($folder))
     	{
@@ -2088,8 +2148,12 @@ class KTAPI
      * @param integer $source_document_id Id of the document to which the shortcut will point
      * @return array Response 'results' contains kt_document_detail | 'message' contains error message on failure
      */
-    function create_document_shortcut($target_folder_id, $source_document_id)
+    function create_document_shortcut($target_folder_id, $source_document_id, $sig_username = '', $sig_password = '', $reason = '')
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.create_shortcut');
+        if ($response['status_code'] == 1) return $response;
+
         $folder = &$this->get_folder_by_id($target_folder_id);
     	if (PEAR::isError($folder))
     	{
@@ -2129,8 +2193,12 @@ class KTAPI
      * @param string $reason The reason for performing the deletion
      * @return array Response | 'message' contains error message on failure
      */
-    function delete_folder($folder_id, $reason)
+    function delete_folder($folder_id, $reason, $sig_username = '', $sig_password = '')
     {
+        $response = $this->_check_electronic_signature($folder_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.delete');
+        if ($response['status_code'] == 1) return $response;
+
         $folder = &$this->get_folder_by_id($folder_id);
 		if (PEAR::isError($folder))
     	{
@@ -2160,8 +2228,12 @@ class KTAPI
      * @param string $newname The new name of the folder
      * @return array Response | 'message' contains error message on failure
      */
-    function rename_folder($folder_id, $newname)
+    function rename_folder($folder_id, $newname, $sig_username = '', $sig_password = '', $reason = '')
     {
+        $response = $this->_check_electronic_signature($folder_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.rename');
+        if ($response['status_code'] == 1) return $response;
+
         $folder = &$this->get_folder_by_id($folder_id);
 		if (PEAR::isError($folder))
     	{
@@ -2191,8 +2263,12 @@ class KTAPI
      * @param string $reason The reason for performing the copy
      * @return array Response | 'message' contains error message on failure
      */
-    function copy_folder($source_id, $target_id, $reason)
+    function copy_folder($source_id, $target_id, $reason, $sig_username = '', $sig_password = '')
     {
+        $response = $this->_check_electronic_signature($source_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.copy');
+        if ($response['status_code'] == 1) return $response;
+        
     	$src_folder = &$this->get_folder_by_id($source_id);
     	if (PEAR::isError($src_folder))
     	{
@@ -2216,7 +2292,7 @@ class KTAPI
     	    $response['message']= $result->getMessage();
     	    return $response;
     	}
-
+        
     	$response['status_code'] = 0;
 
     	if($this->version >= 2){
@@ -2240,8 +2316,12 @@ class KTAPI
      * @param string $reason The reason for performing the move
      * @return array Response | 'message' contains error message on failure
      */
-    function move_folder($source_id, $target_id, $reason)
+    function move_folder($source_id, $target_id, $reason, $sig_username = '', $sig_password = '')
     {
+        $response = $this->_check_electronic_signature($source_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.move');
+        if ($response['status_code'] == 1) return $response;
+
     	$src_folder = &$this->get_folder_by_id($source_id);
     	if (PEAR::isError($src_folder))
     	{
@@ -2636,8 +2716,13 @@ class KTAPI
      * @param string $tempfilename
      * @return kt_document_detail.
      */
-    public function add_document($folder_id,  $title, $filename, $documenttype, $tempfilename)
+    public function add_document($folder_id,  $title, $filename, $documenttype, $tempfilename, 
+                                 $sig_username = '', $sig_password = '', $reason = '')
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.add');
+        if ($response['status_code'] == 1) return $response;
+
 		// we need to add some security to ensure that people don't frig the checkin process to access restricted files.
 		// possibly should change 'tempfilename' to be a hash or id of some sort if this is troublesome.
     	$upload_manager = new KTUploadManager();
@@ -2682,7 +2767,7 @@ class KTAPI
 
 		$update_result = $this->update_document_metadata($document_id, $metadata, $sysdata);
 		if($update_result['status_code'] != 0){
-		    $this->delete_document($document_id, 'Rollback because metadata could not be added');
+		    $this->delete_document($document_id, 'Rollback because metadata could not be added', false);
 			return $update_result;
 		}
 
@@ -2713,7 +2798,7 @@ class KTAPI
 
 		$update_result = $this->update_document_metadata($document_id, $metadata, $sysdata);
 		if($update_result['status_code'] != 0){
-		    $this->delete_document($document_id, 'Rollback because metadata could not be added');
+		    $this->delete_document($document_id, 'Rollback because metadata could not be added', false);
 		    return $update_result;
 		}
 
@@ -2827,8 +2912,13 @@ class KTAPI
      * @param string $tempfilename
      * @return kt_document_detail. status_code can be KTWS_ERR_INVALID_SESSION, KTWS_ERR_INVALID_FOLDER, KTWS_ERR_INVALID_DOCUMENT or KTWS_SUCCESS
      */
-    public function checkin_document($document_id,  $filename, $reason, $tempfilename, $major_update )
+    public function checkin_document($document_id,  $filename, $reason, $tempfilename, $major_update,
+                                     $sig_username = '', $sig_password = '' )
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.check_in');
+        if ($response['status_code'] == 1) return $response;
+        
     	// we need to add some security to ensure that people don't frig the checkin process to access restricted files.
 		// possibly should change 'tempfilename' to be a hash or id of some sort if this is troublesome.
     	$upload_manager = new KTUploadManager();
@@ -2860,8 +2950,13 @@ class KTAPI
 		return $this->get_document_detail($document_id);
     }
 
-    public function  checkin_small_document_with_metadata($document_id,  $filename, $reason, $base64, $major_update, $metadata, $sysdata)
+    public function  checkin_small_document_with_metadata($document_id,  $filename, $reason, $base64, $major_update, 
+                                                          $metadata, $sysdata, $sig_username = '', $sig_password = '')
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.check_in');
+        if ($response['status_code'] == 1) return $response;
+
        	$add_result = $this->checkin_small_document($document_id,  $filename, $reason, $base64, $major_update);
 
        	if($add_result['status_code'] != 0){
@@ -2889,8 +2984,13 @@ class KTAPI
        	return $update_result;
 	}
 
-    public function  checkin_document_with_metadata($document_id,  $filename, $reason, $tempfilename, $major_update, $metadata, $sysdata)
+    public function  checkin_document_with_metadata($document_id,  $filename, $reason, $tempfilename, $major_update, 
+                                                    $metadata, $sysdata, $sig_username = '', $sig_password = '')
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.check_in');
+        if ($response['status_code'] == 1) return $response;
+
        	$add_result = $this->checkin_document($document_id,  $filename, $reason, $tempfilename, $major_update);
 
        	if($add_result['status_code'] != 0){
@@ -2917,7 +3017,6 @@ class KTAPI
        	return $update_result;
 	}
 
-
     /**
      * Does a document checkin.
      *
@@ -2930,8 +3029,12 @@ class KTAPI
      * @param boolean $major_update
      * @return kt_document_detail.
      */
-    public function checkin_small_document($document_id,  $filename, $reason, $base64, $major_update )
+    public function checkin_small_document($document_id,  $filename, $reason, $base64, $major_update, $sig_username = '', $sig_password = '' )
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.check_in');
+        if ($response['status_code'] == 1) return $response;
+
     	$upload_manager = new KTUploadManager();
     	$tempfilename = $upload_manager->store_base64_file($base64, 'su_');
     	if (PEAR::isError($tempfilename))
@@ -2973,8 +3076,12 @@ class KTAPI
      * @param string $reason
      * @return kt_document_detail.
      */
-    public function checkout_document($document_id, $reason, $download=true)
+    public function checkout_document($document_id, $reason, $download=true, $sig_username = '', $sig_password = '')
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.check_out');
+        if ($response['status_code'] == 1) return $response;
+
     	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
     	{
@@ -3028,8 +3135,12 @@ class KTAPI
      * @param boolean $download
      * @return kt_document_detail
      */
-    public function checkout_small_document($document_id, $reason, $download)
+    public function checkout_small_document($document_id, $reason, $download, $sig_username = '', $sig_password = '')
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.check_out');
+        if ($response['status_code'] == 1) return $response;
+
     	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
     	{
@@ -3088,8 +3199,12 @@ class KTAPI
      * @param string $reason
      * @return kt_document_detail.
      */
-    public function undo_document_checkout($document_id, $reason)
+    public function undo_document_checkout($document_id, $reason, $sig_username = '', $sig_password = '')
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.force_checkin');
+        if ($response['status_code'] == 1) return $response;
+
     	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
     	{
@@ -3213,8 +3328,15 @@ class KTAPI
      * @param string $reason
      * @return kt_response
      */
-    public function delete_document($document_id, $reason)
+    public function delete_document($document_id, $reason, $sig_username = '', $sig_password = '', $auth_sig = true)
     {
+        if ($auth_sig)
+        {
+            $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                          'ktcore.transactions.delete');
+            if ($response['status_code'] == 1) return $response;
+        }
+        
     	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
     	{
@@ -3245,8 +3367,12 @@ class KTAPI
      * @param string $documenttype
      * @return array
      */
-    public function change_document_type($document_id, $documenttype)
+    public function change_document_type($document_id, $documenttype, $sig_username = '', $sig_password = '', $reason = '')
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason, 
+                                                       'ktcore.transactions.document_type_change');
+        if ($response['status_code'] == 1) return $response;
+        
     	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
     	{
@@ -3279,8 +3405,12 @@ class KTAPI
      * @param string $newfilename
      * @return array
      */
- 	public function copy_document($document_id,$folder_id,$reason,$newtitle=null,$newfilename=null)
+ 	public function copy_document($document_id,$folder_id,$reason,$newtitle=null,$newfilename=null, $sig_username = '', $sig_password = '')
  	{
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.copy');
+        if ($response['status_code'] == 1) return $response;
+        
       	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
     	{
@@ -3311,7 +3441,7 @@ class KTAPI
  	}
 
  	/**
- 	 * Move a folder to another location.
+ 	 * Move a document to another location.
  	 *
 	 * @author KnowledgeTree Team
 	 * @access public
@@ -3322,8 +3452,12 @@ class KTAPI
  	 * @param string $newfilename
  	 * @return array
  	 */
- 	public function move_document($document_id,$folder_id,$reason,$newtitle=null,$newfilename=null)
+ 	public function move_document($document_id,$folder_id,$reason,$newtitle=null,$newfilename=null, $sig_username = '', $sig_password = '')
  	{
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.move');
+        if ($response['status_code'] == 1) return $response;
+
     	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
     	{
@@ -3368,8 +3502,12 @@ class KTAPI
  	 * @param string $newtitle
  	 * @return arry
  	 */
- 	public function rename_document_title($document_id,$newtitle)
+ 	public function rename_document_title($document_id,$newtitle, $sig_username = '', $sig_password = '', $reason = '')
  	{
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.rename');
+        if ($response['status_code'] == 1) return $response;
+
     	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
     	{
@@ -3400,8 +3538,12 @@ class KTAPI
  	 * @param string $newfilename
  	 * @return array
  	 */
- 	public function rename_document_filename($document_id,$newfilename)
+ 	public function rename_document_filename($document_id,$newfilename, $sig_username = '', $sig_password = '', $reason = '')
  	{
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.rename');
+        if ($response['status_code'] == 1) return $response;
+
     	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
     	{
@@ -3432,8 +3574,12 @@ class KTAPI
      * @param string $reason
      * @return array
      */
-    public function change_document_owner($document_id, $username, $reason)
+    public function change_document_owner($document_id, $username, $reason, $sig_username = '', $sig_password = '')
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason, 
+                                                       'ktcore.transactions.document_owner_change');
+        if ($response['status_code'] == 1) return $response;
+
     	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
     	{
@@ -3465,8 +3611,12 @@ class KTAPI
      * @param string $workflow
      * @return array
      */
-    public function start_document_workflow($document_id,$workflow)
+    public function start_document_workflow($document_id,$workflow, $sig_username = '', $sig_password = '', $reason = '')
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.workflow_state_transition');
+        if ($response['status_code'] == 1) return $response;
+
     	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
     	{
@@ -3495,8 +3645,12 @@ class KTAPI
 	 * @param int $document_id
 	 * @return array
 	 */
-    public function delete_document_workflow($document_id)
+    public function delete_document_workflow($document_id, $sig_username = '', $sig_password = '', $reason = '')
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.workflow_state_transition');
+        if ($response['status_code'] == 1) return $response;
+
     	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
     	{
@@ -3527,8 +3681,12 @@ class KTAPI
      * @param string $reason
      * @return array
      */
-    public function perform_document_workflow_transition($document_id,$transition,$reason)
+    public function perform_document_workflow_transition($document_id,$transition,$reason, $sig_username = '', $sig_password = '')
     {
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.workflow_state_transition');
+        if ($response['status_code'] == 1) return $response;
+
     	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
     	{
@@ -3546,11 +3704,8 @@ class KTAPI
     	}
 
     	return $this->get_document_detail($document_id);
-
     }
 
-
-
     /**
      * Returns the metadata on a document.
      *
@@ -3607,8 +3762,11 @@ class KTAPI
 	 * @param array $metadata
 	 * @return array
 	 */
-	public function update_document_metadata($document_id,$metadata, $sysdata=null)
+	public function update_document_metadata($document_id,$metadata, $sysdata=null, $sig_username = '', $sig_password = '', $reason = '')
 	{
+        $response = $this->_check_electronic_signature($document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.metadata_update');
+        if ($response['status_code'] == 1) return $response;
 
     	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
@@ -3649,7 +3807,6 @@ class KTAPI
 	 */
 	public function get_document_workflow_transitions($document_id)
 	{
-
     	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
     	{
@@ -3712,7 +3869,6 @@ class KTAPI
 	 */
 	public function get_document_transaction_history($document_id)
 	{
-
     	$document = &$this->get_document_by_id($document_id);
 		if (PEAR::isError($document))
     	{
@@ -3744,7 +3900,6 @@ class KTAPI
 	 */
 	public function get_folder_transaction_history($folder_id)
 	{
-
     	$folder = &$this->get_folder_by_id($folder_id);
 		if (PEAR::isError($folder))
     	{
@@ -3840,8 +3995,12 @@ class KTAPI
 	 * @param int $child_document_id
 	 * @return kt_response
 	 */
-	public function unlink_documents($parent_document_id, $child_document_id)
+	public function unlink_documents($parent_document_id, $child_document_id, $sig_username = '', $sig_password = '', $reason = '')
 	{
+        $response = $this->_check_electronic_signature($parent_document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.unlink');
+        if ($response['status_code'] == 1) return $response;
+
     	$document = &$this->get_document_by_id($parent_document_id);
 		if (PEAR::isError($document))
     	{
@@ -3880,8 +4039,11 @@ class KTAPI
 	 * @param string $type
 	 * @return boolean
 	 */
-	public function link_documents($parent_document_id, $child_document_id, $type)
+	public function link_documents($parent_document_id, $child_document_id, $type, $sig_username = '', $sig_password = '', $reason = '')
 	{
+        $response = $this->_check_electronic_signature($parent_document_id, $sig_username, $sig_password, $reason, $reason,
+                                                      'ktcore.transactions.link');
+        if ($response['status_code'] == 1) return $response;
 
     	$document = &$this->get_document_by_id($parent_document_id);
 		if (PEAR::isError($document))
@@ -4490,6 +4652,67 @@ class KTAPI
 		
 		return $response;
 	}
+
+    /**
+     * Method to check whether electronic signatures are enabled
+     *
+     * @author KnowledgeTree Team
+	 * @access public
+     * @return bool $enabled true or false
+     */
+    public function electronic_sig_enabled()
+    {        
+        // Check config for api signatures enabled
+        $oConfig =& KTConfig::getSingleton();
+        $enabled = $oConfig->get('e_signatures/enableApiSignatures', false);
+        // Check that the license is valid
+        $enabled = (BaobabKeyUtil::getLicenseCount() >= MIN_LICENSES) & $enabled;
+
+        return $enabled;
+    }
+
+    /**
+     * Attempts authentication of the signature
+     *
+     * @author KnowledgeTree Team
+     * @access private
+     * @param string $username The users username.
+     * @param string $password The users password.
+     * @param string $comment A comment on the action performed.
+     * @param string $action The action performed.
+     * @param string $details Details about the action performed.
+     * @return bool True if authenticated | False if rejected
+     */
+    private function _authenticateSignature($username, $password, $comment, $action, $details)
+    {
+        $eSignature = new ESignature('api');
+        $result = $eSignature->sign($username, $password, $comment, $action, $details);
+        if(!$result){
+            $this->esig_error = $eSignature->getError();
+        }
+
+        return $result;
+    }
+
+    /**
+     * Method to execute electronic signature checks on action
+     */
+    private function _check_electronic_signature($item_id, $username, $password, $comment, $details, $action)
+    {
+        $response = array();
+        $response['status_code'] = 0;
+
+        // check electronic signature authentication, if on
+        if ($this->esig_enabled && !$this->_authenticateSignature($username, $password, $comment, $action, $item_id))
+        {
+            $response['status_code'] = 1;
+    	    $response['message'] = $this->esig_error;
+            
+    	    return $response;
+        }
+
+        return $response;
+    }
 }
 
 
diff --git a/tests/api/testApi.php b/tests/api/testApi.php
index 1d6f2ef..95994a0 100644
--- a/tests/api/testApi.php
+++ b/tests/api/testApi.php
@@ -117,7 +117,7 @@ class APITestCase extends KTUnitTestCase {
 
         // create the document object
         $randomFile = $this->createRandomFile();
-        $document = $this->root->add_document('title_1.txt', 'name_1.txt', 'Default', $randomFile);
+        $document = $this->root->add_document('title_1.txt', 'name_1.txt', 'Default', $randomFile, 'admin', 'admin', 'Testing API');
         @unlink($randomFile);
 
         $internalDocObject = $document->getObject();
@@ -132,7 +132,8 @@ class APITestCase extends KTUnitTestCase {
 
         // create the document object
         $randomFile = $this->createRandomFile();
-        $document2 = $this->root->add_document('title_2.txt', 'name_2.txt', 'Default', $randomFile);
+        $document2 = $this->root->add_document('title_2.txt', 'name_2.txt', 'Default', $randomFile, 'admin', 'admin', 'Testing API');
+        
         @unlink($randomFile);
 
         $internalDocObject2 = $document2->getObject();
@@ -301,7 +302,7 @@ class APITestCase extends KTUnitTestCase {
     {
         // create the document object
         $randomFile = $this->createRandomFile();
-        $document = $this->root->add_document('title_5.txt', 'name_5.txt', 'Default', $randomFile);
+        $document = $this->root->add_document('title_5.txt', 'name_5.txt', 'Default', $randomFile, 'admin', 'admin', 'reason');
         @unlink($randomFile);
 
         $documentID = $document->get_documentid();
@@ -432,7 +433,7 @@ class APITestCase extends KTUnitTestCase {
     {
         // Create a document and subscribe to it
         $randomFile = $this->createRandomFile();
-        $document = $this->root->add_document('test title 1', 'testfile1.txt', 'Default', $randomFile);
+        $document = $this->root->add_document('test title 1', 'testfile1.txt', 'Default', $randomFile, 'admin', 'admin', 'Testing API');
         @unlink($randomFile);
 
         $this->assertEntity($document, 'KTAPI_Document');
@@ -458,18 +459,18 @@ class APITestCase extends KTUnitTestCase {
     public function testFolderApiFunctions()
     {
         // check for a negative result
-        $result = $this->ktapi->create_folder(0, 'New test error api folder');
+        $result = $this->ktapi->create_folder(0, 'New test error api folder', 'admin', 'admin', 'Testing API');
         $this->assertNotEqual($result['status_code'], 0);
 
         // Create a folder
-        $result1 = $this->ktapi->create_folder(1, 'New test api folder');
+        $result1 = $this->ktapi->create_folder(1, 'New test api folder', 'admin', 'admin', 'Testing API');
         $folder_id = $result1['results']['id'];
 
         $this->assertEqual($result1['status_code'], 0);
         $this->assertTrue($result1['results']['parent_id'] == 1);
 
         // Create a sub folder
-        $result2 = $this->ktapi->create_folder($folder_id, 'New test api sub-folder');
+        $result2 = $this->ktapi->create_folder($folder_id, 'New test api sub-folder', 'admin', 'admin', 'Testing API');
         $folder_id2 = $result2['results']['id'];
         $this->assertEqual($result2['status_code'], 0);
 
@@ -477,8 +478,10 @@ class APITestCase extends KTUnitTestCase {
         global $default;
         $dir = $default->uploadDirectory;
         $tempfilename = $this->createRandomFile('some text', $dir);
-        $doc = $this->ktapi->add_document($folder_id,  'New API test doc', 'testdoc1.txt', 'Default', $tempfilename);
 
+        $doc = $this->ktapi->add_document($folder_id,  'New API test doc', 'testdoc1.txt', 'Default',
+                                                $tempfilename, 'admin', 'admin', 'Testing API');
+        
         $this->assertEqual($doc['status_code'], 0);
         $this->assertEqual($doc['results']['title'], 'New API test doc');
 
@@ -492,7 +495,7 @@ class APITestCase extends KTUnitTestCase {
         $this->assertTrue($detail['results']['parent_id'] == $folder_id);
 
         // Create a shortcut to the subfolder from the root folder
-        $shortcut = $this->ktapi->create_folder_shortcut(1, $folder_id2);
+        $shortcut = $this->ktapi->create_folder_shortcut(1, $folder_id2, 'admin', 'admin', 'Testing API');
         $this->assertEqual($shortcut['status_code'], 0);
         $this->assertEqual($shortcut['results']['folder_name'], 'New test api sub-folder');
         $this->assertEqual($shortcut['results']['parent_id'], 1);
@@ -502,7 +505,7 @@ class APITestCase extends KTUnitTestCase {
         $this->assertEqual(count($shortcut_list['results']), 1);
 
         // Rename the folder
-        $renamed = $this->ktapi->rename_folder($folder_id, 'Renamed test folder');
+        $renamed = $this->ktapi->rename_folder($folder_id, 'Renamed test folder', 'admin', 'admin', 'Testing API');
         $this->assertEqual($renamed['status_code'], 0);
 
         $renamed_detail = $this->ktapi->get_folder_detail_by_name('Renamed test folder');
@@ -512,9 +515,9 @@ class APITestCase extends KTUnitTestCase {
 //        $this->ktapi->copy_folder($source_id, $target_id, $reason);
 //        $this->ktapi->move_folder($source_id, $target_id, $reason);
 
-
         // Clean up - delete the folder
-        $this->ktapi->delete_folder($folder_id, 'Testing API');
+        $this->ktapi->delete_folder($folder_id, 'Testing API', 'admin', 'admin');
+        
         $detail2 = $this->ktapi->get_folder_detail($folder_id);
         $this->assertNotEqual($detail2['status_code'], 0);
     }
@@ -525,12 +528,12 @@ class APITestCase extends KTUnitTestCase {
     public function testDocumentApiFunctions()
     {
         // Create a folder
-        $result1 = $this->ktapi->create_folder(1, 'New test api folder');
+        $result1 = $this->ktapi->create_folder(1, 'New test api folder', 'admin', 'admin', 'Testing API');
         $folder_id = $result1['results']['id'];
         $this->assertEqual($result1['status_code'], 0);
 
         // Create a sub folder
-        $result2 = $this->ktapi->create_folder($folder_id, 'New test api sub-folder');
+        $result2 = $this->ktapi->create_folder($folder_id, 'New test api sub-folder', 'admin', 'admin', 'Testing API');
         $folder_id2 = $result2['results']['id'];
         $this->assertEqual($result2['status_code'], 0);
 
@@ -538,8 +541,9 @@ class APITestCase extends KTUnitTestCase {
         global $default;
         $dir = $default->uploadDirectory;
         $tempfilename = $this->createRandomFile('some text', $dir);
-        $doc = $this->ktapi->add_document($folder_id,  'New API test doc', 'testdoc1.txt', 'Default', $tempfilename);
-
+        $doc = $this->ktapi->add_document($folder_id,  'New API test doc', 'testdoc1.txt', 'Default', $tempfilename,
+                                              'admin', 'admin', 'Testing API');
+        
         $doc_id = $doc['results']['document_id'];
         $this->assertEqual($doc['status_code'], 0);
 
@@ -565,15 +569,15 @@ class APITestCase extends KTUnitTestCase {
         $this->assertEqual($detail4['results']['title'], 'New API test doc');
 
         // Checkout the document
-        $result1 = $this->ktapi->checkout_document($doc_id, 'Testing API', true);
+        $result1 = $this->ktapi->checkout_document($doc_id, 'Testing API', true, 'admin', 'admin');
         $this->assertEqual($result1['status_code'], 0);
         $this->assertTrue(!empty($result1['results']));
 
         // Checkin the document
         $dir = $default->uploadDirectory;
         $tempfilename = $this->createRandomFile('some text', $dir);
-        $result2 = $this->ktapi->checkin_document($doc_id,  'testdoc1.txt', 'Testing API', $tempfilename, false);
-
+        $result2 = $this->ktapi->checkin_document($doc_id,  'testdoc1.txt', 'Testing API', $tempfilename, false, 'admin', 'admin');
+        
         $this->assertEqual($result2['status_code'], 0);
         $this->assertEqual($result2['results']['document_id'], $doc_id);
 
@@ -584,11 +588,12 @@ class APITestCase extends KTUnitTestCase {
         $this->assertEqual($shortcut['results']['folder_id'], $folder_id);
 
         // Delete the document
-        $result3 = $this->ktapi->delete_document($doc_id, 'Testing API');
+        $result3 = $this->ktapi->delete_document($doc_id, 'Testing API', 'admin', 'admin', true);
         $this->assertEqual($result3['status_code'], 0);
 
         // Clean up - delete the folder
-        $this->ktapi->delete_folder($folder_id, 'Testing API');
+        $this->ktapi->delete_folder($folder_id, 'Testing API', 'admin', 'admin');
+        
         $detail2 = $this->ktapi->get_folder_detail($folder_id);
         $this->assertNotEqual($detail2['status_code'], 0);
     }
@@ -606,7 +611,7 @@ class APITestCase extends KTUnitTestCase {
         $randomFile = $this->createRandomFile();
         $this->assertTrue(is_file($randomFile));
 
-        $document = $folder->add_document($title, $filename, 'Default', $randomFile);
+        $document = $folder->add_document($title, $filename, 'Default', $randomFile, 'admin', 'admin', 'Testing API');
         $this->assertNotError($document);
 
         @unlink($randomFile);
diff --git a/tests/api/testAuto.php b/tests/api/testAuto.php
index 1015d23..d9c14cf 100644
--- a/tests/api/testAuto.php
+++ b/tests/api/testAuto.php
@@ -22,7 +22,7 @@ class APIAutoTestCase extends KTUnitTestCase {
      * @var object $root The KT folder object
      */
     var $root;
-
+    
     /**
     * This method sets up the KT session
     *
@@ -42,8 +42,6 @@ class APIAutoTestCase extends KTUnitTestCase {
         $this->session->logout();
     }
    
-
-
 	function testJunkanonymous_login() { 
 		$result = $this->ktapi->anonymous_login(null);
 		$this->assertIsA($result, 'array');
@@ -92,31 +90,29 @@ class APIAutoTestCase extends KTUnitTestCase {
 
 
 
-	function tesRealdelete_folder() { 
-		$result = $this->ktapi->delete_folder($folder_id, $reason);
-		$this->assertIsA($result, 'array');
+	function tesRealdelete_folder() {
+        $result = $this->ktapi->delete_folder($folder_id, $reason, 'admin', 'admin');
+        $this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
-
 	function tesRealrename_folder() { 
-		$result = $this->ktapi->rename_folder($folder_id, $newname);
-		$this->assertIsA($result, 'array');
+		$result = $this->ktapi->rename_folder($folder_id, $newname, 'admin', 'admin', 'Testing API');
+        $this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
 
 	function tesRealcopy_folder() { 
-		$result = $this->ktapi->copy_folder($source_id, $target_id, $reason);
-		$this->assertIsA($result, 'array');
+		$result = $this->ktapi->copy_folder($source_id, $target_id, $reason, 'admin', 'admin');
+        $this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
 
 	function tesRealmove_folder() { 
-		$result = $this->ktapi->move_folder($source_id, $target_id, $reason);
-		$this->assertIsA($result, 'array');
+		$result = $this->ktapi->move_folder($source_id, $target_id, $reason, 'admin', 'admin');
+        $this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
@@ -132,7 +128,7 @@ class APIAutoTestCase extends KTUnitTestCase {
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-	function testJunkget_document_detail_by_filename() { 
+	function testJunkget_document_detail_by_filename() {
 		$result = $this->ktapi->get_document_detail_by_filename(null, null, null);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 1);
@@ -168,27 +164,25 @@ class APIAutoTestCase extends KTUnitTestCase {
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
-	function tesRealget_document_shortcuts() { 
+	function tesRealget_document_shortcuts() {
 		$result = $this->ktapi->get_document_shortcuts($document_id);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-	function testJunkadd_document() { 
-		$result = $this->ktapi->add_document(null, null, null, null, null);
+	function testJunkadd_document() {
+		$result = $this->ktapi->add_document(null, null, null, null, null, 'admin', 'admin', 'Testing API');
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 1);
 	}
 
 	function tesRealadd_document() { 
-		$result = $this->ktapi->add_document($folder_id, $title, $filename, $documenttype, $tempfilename);
+		$result = $this->ktapi->add_document($folder_id, $title, $filename, $documenttype, $tempfilename,
+                                             'admin', 'admin', 'Testing API');
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
-
 	function tesRealadd_small_document_with_metadata() { 
 		$result = $this->ktapi->add_small_document_with_metadata($folder_id, $title, $filename, $documenttype, $base64, $metadata, $sysdata);
 		$this->assertIsA($result, 'array');
@@ -214,18 +208,17 @@ class APIAutoTestCase extends KTUnitTestCase {
 	}
 
 	function testJunkcheckin_document() { 
-		$result = $this->ktapi->checkin_document(null, null, null, null, null);
+		$result = $this->ktapi->checkin_document(null, null, null, null, null, 'admin', 'admin');
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 1);
 	}
 
 	function tesRealcheckin_document() { 
-		$result = $this->ktapi->checkin_document($document_id, $filename, $reason, $tempfilename, $major_update);
+		$result = $this->ktapi->checkin_document($document_id, $filename, $reason, $tempfilename, $major_update, 'admin', 'admin');
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
 	function tesRealcheckin_small_document_with_metadata() { 
 		$result = $this->ktapi->checkin_small_document_with_metadata($document_id, $filename, $reason, $base64, $major_update, $metadata, $sysdata);
 		$this->assertIsA($result, 'array');
@@ -238,62 +231,48 @@ class APIAutoTestCase extends KTUnitTestCase {
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
-
 	function tesRealcheckin_small_document() { 
 		$result = $this->ktapi->checkin_small_document($document_id, $filename, $reason, $base64, $major_update);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
-
 	function tesRealcheckout_document() { 
 		$result = $this->ktapi->checkout_document($document_id, $reason, $download);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
-
 	function tesRealcheckout_small_document() { 
 		$result = $this->ktapi->checkout_small_document($document_id, $reason, $download);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
 	function tesRealundo_document_checkout() { 
-		$result = $this->ktapi->undo_document_checkout($document_id, $reason);
+		$result = $this->ktapi->undo_document_checkout($document_id, $reason, 'admin', 'admin');
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
-
 	function tesRealdownload_document() { 
 		$result = $this->ktapi->download_document($document_id, $version);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
-
 	function tesRealdownload_small_document() { 
 		$result = $this->ktapi->download_small_document($document_id, $version);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
 	function tesRealdelete_document() { 
 		$result = $this->ktapi->delete_document($document_id, $reason);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
-
 	function tesRealchange_document_type() { 
 		$result = $this->ktapi->change_document_type($document_id, $documenttype);
 		$this->assertIsA($result, 'array');
@@ -306,86 +285,72 @@ class APIAutoTestCase extends KTUnitTestCase {
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
-
 	function tesRealrename_document_title() { 
 		$result = $this->ktapi->rename_document_title($document_id, $newtitle);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
-
 	function tesRealrename_document_filename() { 
 		$result = $this->ktapi->rename_document_filename($document_id, $newfilename);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
 	function tesRealchange_document_owner() { 
 		$result = $this->ktapi->change_document_owner($document_id, $username, $reason);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
 	function tesRealstart_document_workflow() { 
 		$result = $this->ktapi->start_document_workflow($document_id, $workflow);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
 	function tesRealdelete_document_workflow() { 
-		$result = $this->ktapi->delete_document_workflow($document_id);
+		$result = $this->ktapi->delete_document_workflow($document_id, 'Testing API', 'admin', 'admin', true);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
 	function tesRealperform_document_workflow_transition() { 
 		$result = $this->ktapi->perform_document_workflow_transition($document_id, $transition, $reason);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
 	function tesRealget_document_metadata() { 
 		$result = $this->ktapi->get_document_metadata($document_id);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
 	function tesRealupdate_document_metadata() { 
 		$result = $this->ktapi->update_document_metadata($document_id, $metadata, $sysdata);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
 	function tesRealget_document_workflow_state() { 
 		$result = $this->ktapi->get_document_workflow_state($document_id);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
 	function tesRealget_document_transaction_history() { 
 		$result = $this->ktapi->get_document_transaction_history($document_id);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
 	function tesRealget_document_version_history() { 
 		$result = $this->ktapi->get_document_version_history($document_id);
 		$this->assertIsA($result, 'array');
 		$this->assertEqual($result['status_code'], 0);
 	}
 
-
 	function tesRealget_document_links() { 
 		$result = $this->ktapi->get_document_links($document_id);
 		$this->assertIsA($result, 'array');