diff --git a/src/vitis/vas/rest/class/vmlib/files/Local_files.class.inc b/src/vitis/vas/rest/class/vmlib/files/Local_files.class.inc
index 6f456308b02f7d394c97e8d6865c4aa77002e781..37f99882d54fc3c313c72114c8dddd3b480f2db4 100644
--- a/src/vitis/vas/rest/class/vmlib/files/Local_files.class.inc
+++ b/src/vitis/vas/rest/class/vmlib/files/Local_files.class.inc
@@ -43,6 +43,15 @@ class Local_files implements Files{
     public function file_put_contents ($sFilePath, $sData, $iFlags = 0, $mContext = null){
         return file_put_contents($sFilePath, $sData, $iFlags, $mContext);
     }
+    /**
+     *read a file and return content in a string.
+     *@param string $sFilePath File's path.
+     *@param boolean $bUseIncludePath use include var to resolve a relative path.
+     *@param resource $mContext result de stream_context_create().
+     *@param integer $iOffset offset in bytes to begin file reading, Default : 0.
+     *@param integer $iMaxLen Number of byte to read from the file, Default : -1 = read until the file's end.
+     *@return string|boolean file content, or false if the process encounter an error.
+     */
     public function file_get_contents ($sFilePath, $bUseIncludePath = FALSE, $mContext = null, $iOffset = 0, $iMaxLen = -1){
         if ($iMaxLen == -1){
             return file_get_contents ($sFilePath, $bUseIncludePath, null, $iOffset);
@@ -50,6 +59,16 @@ class Local_files implements Files{
             return file_get_contents ($sFilePath, $bUseIncludePath, null, $iOffset, $iMaxLen);
         }
     }
+    /**
+     *read a file and return content in a string if eTag matches.
+     *@param string $sFilePath File's path.
+     *@param string $sEtag Hash Sha1 of file's content.
+     *@param boolean $bUseIncludePath use include var to resolve a relative path.
+     *@param resource $mContext result de stream_context_create().
+     *@param integer $iOffset offset in bytes to begin file reading, Default : 0.
+     *@param integer $iMaxLen Number of byte to read from the file, Default : -1 = read until the file's end.
+     *@return string|boolean file content, or false if the process encounter an error.
+     */
     public function file_get_contents_with_etag ($sFilePath, $sEtag ,$bUseIncludePath = FALSE, $mContext = null, $iOffset = 0, $iMaxLen = -1){
         $sProcessedEtag = $this->getFileEtag($sFilePath);
         if ($sEtag == $sProcessedEtag){
@@ -58,15 +77,40 @@ class Local_files implements Files{
             return false;
         }
     }
+    /**
+     *copy a file.
+     *@param string $sSourceFilePath File's path to copy.
+     *@param string $sDestFilePath File's destination.
+     *@return boolean true on sucess or false if the process encounter an error.
+     */
     public function copy ($sSourceFilePath, $sDestFilePath){
         return copy ($sSourceFilePath, $sDestFilePath);
     }
+    /**
+     *return the size of a file in bytes.
+     *@param string $sFilePath File's path.
+     *@return integer|boolean File's size in bytes or false if the process encounter an error.
+     */
     public function filesize ($sFilePath){
         return filesize($sFilePath);
     }
+    /**
+     *send file's content into stdout.
+     *@param string $sFilePath File's path.
+     *@param boolean $bUseIncludePath use include var to resolve a relative path.
+     *@param resource $mContext result de stream_context_create().
+     *@return integer|boolean File's size in bytes or false if the process encounter an error.
+     */
     public function readfile ($sFilePath, $bUseIncludePath = FALSE, $mContext = null){
         return readfile($sFilePath, $bUseIncludePath, $mContext);
     }
+    /**
+     *move a file.
+     *@param string $sSourceFilePath File's path to copy.
+     *@param string $sDestFilePath File's destination.
+     *@param resource $mContext result de stream_context_create().
+     *@return boolean true on sucess or false if the process encounter an error.
+     */
     public function rename ($sSourceFilePath, $sDestFilePath, $mContext = null){
         if(empty($mContext)){
             return rename($sSourceFilePath, $sDestFilePath);
@@ -74,6 +118,12 @@ class Local_files implements Files{
             return rename($sSourceFilePath, $sDestFilePath, $mContext);
         }
     }
+    /**
+     *remove a file.
+     *@param string $sFilePath File's path.
+     *@param resource $mContext result de stream_context_create().
+     *@return boolean true on sucess or false if the process encounter an error.
+     */
     public function unlink ($sFilePath, $mContext = null){
         if(empty($mContext)){
             return unlink($sFilePath);
@@ -81,13 +131,28 @@ class Local_files implements Files{
             return unlink($sFilePath, $mContext);
         }
     }
+    /**
+     *return the number of second UNIX of the last modification on a file.
+     *@param string $sFilePath File's path.
+     *@return integer|boolean timestamp on sucess or false if the process encounter an error.
+     */
     public function filemtime ($sFilePath){
         return filemtime($sFilePath);
     }
-
+    /**
+     *return the fomrated date of the last modification on a file.
+     *@param string $sFilePath File's path.
+     *@param string $sFormat Format to convert the timestamp.
+     *@return string|boolean date string on sucess or false if the process encounter an error.
+     */
     public function filemtime_formated($sFilePath, $sFormat){
         return date ($sFormat, $this->filemtime($sFilePath));
     }
+    /**
+     *return the metadata structure of a file.
+     *@param string $sFilePath File's path.
+     *@return array filename, size, lastModification, href.
+     */
     public function getFileInfos ($sFilePath){
         $iFileSize = $this->filesize($sFilePath);
 
@@ -108,6 +173,11 @@ class Local_files implements Files{
 
         return array("filename"=>$aFileName[count($aFileName) - 1], "size"=>$sFileSize, "lastModification"=> $this->filemtime_formated ($sFilePath, "d/m/Y H:i:s"), "href" => $this->getProxyPassUrl($sFilePath));
     }
+    /**
+     *return an url to download the file through Vitis API .
+     *@param string $sFilePath File's path.
+     *@return string url.
+     */
     public function getProxyPassUrl ($sFilePath){
         $date = new DateTime();
         $sDataUrl = $this->oProperties['web_server_name'] . "/rest/vitis/file_downloader?key=[KEY]&eTag=[ETAG]&d=" . $date->getTimestamp();
diff --git a/src/vitis/vas/rest/class/vmlib/files/S3_files.class.inc b/src/vitis/vas/rest/class/vmlib/files/S3_files.class.inc
index 470b94a1080c85e73bb0f668ba3431eee4f31d00..ec03d5ab58e6f4ff417ff937882c590d77413908 100644
--- a/src/vitis/vas/rest/class/vmlib/files/S3_files.class.inc
+++ b/src/vitis/vas/rest/class/vmlib/files/S3_files.class.inc
@@ -20,7 +20,11 @@ class S3_files implements Files{
             'debug' => false
         ));
     }
-
+    /**
+     *parse vitis properties ti extract bucket name and bucket prefix.
+     *@private
+     *@return array bucket'name, prefix.
+     */
     private function getBucketConst(){
         $sBucket = $this->oProperties['fileS3UploaderBucket'];
         $sPrefix = "";
@@ -33,6 +37,11 @@ class S3_files implements Files{
 
         return array($sBucket, $sPrefix);
     }
+    /**
+     *This method return the extension of a file.
+     *@param string $sFilePath File's path.
+     *@return string|boolean hash md5 of file content or false if the file doesn't exist.
+     */
     public function getFileEtag($sFilePath){
         list($sBucket, $sPrefix) = $this->getBucketConst();
         $sFilePath = str_replace($this->oProperties["vas_home"], $sPrefix , $sFilePath);
@@ -49,6 +58,11 @@ class S3_files implements Files{
             return false;
         }
     }
+    /**
+     *verify if a file exists.
+     *@param string $sFilePath File's path.
+     *@return boolean true if file exists, false else.
+     */
     public function file_exists ($sFilePath){
 
         list($sBucket, $sPrefix) = $this->getBucketConst();
@@ -65,6 +79,14 @@ class S3_files implements Files{
         }
         return true;
     }
+    /**
+     *Write a string in a file.
+     *@param string $sFilePath File's path.
+     *@param string $sData string to write in this file.
+     *@param integer $iFlags flags to write in file (http://php.net/manual/fr/function.file-put-contents.php) Default : 0.
+     *@param resource $mContext result de stream_context_create().
+     *@return integer|boolean number of byte written, or false if the process encounter an error.
+     */
     public function file_put_contents ($sFilePath, $sData, $iFlags = 0, $mContext = null){
         list($sBucket, $sPrefix) = $this->getBucketConst();
         $sFilePath = str_replace($this->oProperties["vas_home"], $sPrefix , $sFilePath);
@@ -82,7 +104,15 @@ class S3_files implements Files{
         }
         return strlen($sData);
     }
-
+    /**
+     *read a file and return content in a string.
+     *@param string $sFilePath File's path.
+     *@param boolean $bUseIncludePath use include var to resolve a relative path.
+     *@param resource $mContext result de stream_context_create().
+     *@param integer $iOffset offset in bytes to begin file reading, Default : 0.
+     *@param integer $iMaxLen Number of byte to read from the file, Default : -1 = read until the file's end.
+     *@return string|boolean file content, or false if the process encounter an error.
+     */
     public function file_get_contents ($sFilePath, $bUseIncludePath = FALSE, $mContext = null, $iOffset = 0, $iMaxLen = -1){
 
         list($sBucket, $sPrefix) = $this->getBucketConst();
@@ -112,7 +142,16 @@ class S3_files implements Files{
         unlink($sPath);
         return $sFile;
     }
-
+    /**
+     *read a file and return content in a string if eTag matches.
+     *@param string $sFilePath File's path.
+     *@param string $sEtag Hash Sha1 of file's content.
+     *@param boolean $bUseIncludePath use include var to resolve a relative path.
+     *@param resource $mContext result de stream_context_create().
+     *@param integer $iOffset offset in bytes to begin file reading, Default : 0.
+     *@param integer $iMaxLen Number of byte to read from the file, Default : -1 = read until the file's end.
+     *@return string|boolean file content, or false if the process encounter an error.
+     */
     public function file_get_contents_with_etag ($sFilePath, $sEtag ,$bUseIncludePath = FALSE, $mContext = null, $iOffset = 0, $iMaxLen = -1){
         list($sBucket, $sPrefix) = $this->getBucketConst();
         $sFilePath = str_replace($this->oProperties["vas_home"], $sPrefix , $sFilePath);
@@ -141,7 +180,12 @@ class S3_files implements Files{
         unlink($sPath);
         return $sFile;
     }
-
+    /**
+     *copy a file in the same bucket.
+     *@param string $sSourceFilePath Object's key to copy.
+     *@param string $sDestFilePath Object's destination key.
+     *@return boolean true on sucess or false if the process encounter an error.
+     */
     public function copy ($sSourceFilePath, $sDestFilePath){
         list($sBucket, $sPrefix) = $this->getBucketConst();
         $sDestFilePath = str_replace($this->oProperties["vas_home"], $sPrefix , $sDestFilePath);
@@ -159,6 +203,13 @@ class S3_files implements Files{
             return false;
         }
     }
+    /**
+     *copy a file in another bucket.
+     *@param string $sSourceFilePath Object's key to copy.
+     *@param string $sDests3Key Object's destination key.
+     *@param string $sDestBucket Object's destination bucket.
+     *@return boolean true on sucess or false if the process encounter an error.
+     */
     public function copyInAnotherBucket ($sSourceFilePath, $sDests3Key, $sDestBucket){
         list($sBucket, $sPrefix) = $this->getBucketConst();
         $sSourceFilePath = str_replace($this->oProperties["vas_home"], $sPrefix , $sSourceFilePath);
@@ -175,6 +226,12 @@ class S3_files implements Files{
             return false;
         }
     }
+    /**
+     *send a local file to S3.
+     *@param string $sSourceFilePath File's path to copy.
+     *@param string $sDestFilePath Object's destination key.
+     *@return boolean true on sucess or false if the process encounter an error.
+     */
     public function copyLocalToS3 ($sSourceFilePath, $sDestFilePath){
         list($sBucket, $sPrefix) = $this->getBucketConst();
         $sDestFilePath = str_replace($this->oProperties["vas_home"], $sPrefix , $sDestFilePath);
@@ -192,6 +249,11 @@ class S3_files implements Files{
         }
         return true;
     }
+    /**
+     *return the size of a file in bytes.
+     *@param string $sFilePath File's path.
+     *@return integer|boolean File's size in bytes or false if the process encounter an error.
+     */
     public function filesize ($sFilePath){
         list($sBucket, $sPrefix) = $this->getBucketConst();
         $sFilePath = str_replace($this->oProperties["vas_home"], $sPrefix , $sFilePath);
@@ -208,6 +270,13 @@ class S3_files implements Files{
             return false;
         }
     }
+    /**
+     *send file's content into stdout.
+     *@param string $sFilePath File's path.
+     *@param boolean $bUseIncludePath use include var to resolve a relative path.
+     *@param resource $mContext result de stream_context_create().
+     *@return integer|boolean File's size in bytes or false if the process encounter an error.
+     */
     public function readfile ($sFilePath, $bUseIncludePath = FALSE, $mContext = null){
         list($sBucket, $sPrefix) = $this->getBucketConst();
         $sFilePath = str_replace($this->oProperties["vas_home"], $sPrefix , $sFilePath);
@@ -230,12 +299,25 @@ class S3_files implements Files{
         unlink($sPath);
         return $iLength;
     }
+    /**
+     *move a file.
+     *@param string $sSourceFilePath File's path to copy.
+     *@param string $sDestFilePath File's destination.
+     *@param resource $mContext result de stream_context_create().
+     *@return boolean true on sucess or false if the process encounter an error.
+     */
     public function rename ($sSourceFilePath, $sDestFilePath, $mContext = null){
         $bReturn = $this->copy($sSourceFilePath, $sDestFilePath);
         if ($bReturn)
             $bReturn = $this->unlink($sSourceFilePath, $mContext);
         return $bReturn;
     }
+    /**
+     *remove a file.
+     *@param string $sFilePath File's path.
+     *@param resource $mContext result de stream_context_create().
+     *@return boolean true on sucess or false if the process encounter an error.
+     */
     public function unlink ($sFilePath, $mContext = null){
         list($sBucket, $sPrefix) = $this->getBucketConst();
         $sFilePath = str_replace($this->oProperties["vas_home"], $sPrefix , $sFilePath);
@@ -251,6 +333,11 @@ class S3_files implements Files{
             return false;
         }
     }
+    /**
+     *return the number of second UNIX of the last modification on a file.
+     *@param string $sFilePath File's path.
+     *@return integer|boolean timestamp on sucess or false if the process encounter an error.
+     */
     public function filemtime ($sFilePath){
         list($sBucket, $sPrefix) = $this->getBucketConst();
         $sFilePath = str_replace($this->oProperties["vas_home"], $sPrefix , $sFilePath);
@@ -267,9 +354,20 @@ class S3_files implements Files{
             return false;
         }
     }
+    /**
+     *return the fomrated date of the last modification on a file.
+     *@param string $sFilePath File's path.
+     *@param string $sFormat Format to convert the timestamp.
+     *@return string|boolean date string on sucess or false if the process encounter an error.
+     */
     public function filemtime_formated ($sFilePath, $sFormat){
         return date ($sFormat, $this->filemtime($sFilePath));
     }
+    /**
+     *return the metadata structure of a file.
+     *@param string $sFilePath File's path.
+     *@return array filename, size, lastModification, href.
+     */
     public function getFileInfos ($sFilePath){
         $iFileSize = $this->filesize($sFilePath);
 
@@ -290,6 +388,11 @@ class S3_files implements Files{
 
         return array("filename"=>$aFileName[count($aFileName) - 1], "size"=>$sFileSize, "lastModification"=> $this->filemtime_formated ($sFilePath, "d/m/Y H:i:s"), "href" => $this->getProxyPassUrl($sFilePath));
     }
+    /**
+     *return an url to download the file through Vitis API .
+     *@param string $sFilePath File's path.
+     *@return string url.
+     */
     public function getProxyPassUrl ($sFilePath){
         $sEtag = $this->getFileEtag($sFilePath);
         list($sBucket, $sPrefix) = $this->getBucketConst();