diff --git a/docs/software-developer-documentation/server-side-extensions/dss-dropboxes.md b/docs/software-developer-documentation/server-side-extensions/dss-dropboxes.md
index 39a0a0628c40f3346d4ee7fc019d788ea2e66939..abdad695994eeae567cf48449b619b135b417111 100644
--- a/docs/software-developer-documentation/server-side-extensions/dss-dropboxes.md
+++ b/docs/software-developer-documentation/server-side-extensions/dss-dropboxes.md
@@ -17,8 +17,6 @@ is returned to its original state in the event of an error.
 By deafult python 2.5 is used, but it's possible to use python version
 2.7.
 
-  
-
 Dropboxes are dss core plugins: [Core
 Plugins](/display/openBISDoc2010/Core+Plugins)
 
@@ -513,8 +511,6 @@ type or data set type). This provides an easy-to-use interface for a
 common case. More complex searches, however, need to use the more
 powerful API.
 
-  
-
 ### Authorization Service
 
 The transaction provides an interface for querying the access privileges
@@ -626,8 +622,6 @@ Error Handling
 
 ### Automatic Retry (auto recovery)
 
-  
-
 OpenBIS has a complex mechanism to ensure that the data registration via
 dropboxes is atomic. When error occurs during data registration, the
 dropbox will try several times before it gives up on the process. The
@@ -717,8 +711,6 @@ Validation scripts
 See [Jython
 DataSetValidator](/display/openBISDoc2010/Jython+DataSetValidator).
 
-  
-
 Global Thread Parameters
 ------------------------
 
@@ -742,10 +734,6 @@ the `getGlobalState`. Here we show an example how to use:
         threadPropertyDict = getThreadProperties(transaction)
         incomingRootDir = threadPropertyDict[u'incoming-root-dir']
 
-  
-
-  
-
 Sending Emails from a Drop box
 ------------------------------
 
@@ -757,10 +745,6 @@ Sending Emails from a Drop box
     def process(transaction):
         transaction.getRegistrationContext().getPersistentMap().put(PERSISTANT_KEY_MAP, [fcId])
 
-  
-
-  
-
 Java Dropboxes
 --------------
 
@@ -891,8 +875,6 @@ implementation of this interface.
                 throws NotImplementedException;
     }
 
-  
-
 Sending Emails in a drop box (simple)
 -------------------------------------
 
@@ -907,8 +889,6 @@ Sending Emails in a drop box (simple)
       transaction.getGlobalState().getMailClient().sendEmailMessage("This is the subject", \
                     "This is the body", replyTo, fromAddress, recipient1, recipient2);
 
-  
-
 ### Java Dropbox Example
 
 This is a simple example of a pure-java dropbox that creates a sample
@@ -968,8 +948,6 @@ Restart the DSS
 Calling an Aggregation Service from a drop box
 ----------------------------------------------
 
-  
-
 **drop box code**
 
     '''
@@ -998,8 +976,6 @@ Calling an Aggregation Service from a drop box
         # Parameters: String sessionToken, String dataStoreCode,String serviceKey, Map<String, Object> parameters)
         s.createReportFromAggregationService(session_token, dss, service_key, d)
 
-  
-
 Known limitations
 -----------------
 
@@ -1040,4 +1016,4 @@ Data set:
 
 Material:
 
--   updating the same material
\ No newline at end of file
+-   updating the same material