doc update

action/HasActionsIF.h

@@ -47,9 +47,10 @@ public:
 	virtual MessageQueueId_t getCommandQueue() const = 0;
 	/**
 	 * Execute or initialize the execution of a certain function.
-	 * When used in conjunction with the ActionHelper class, returning
-	 * a return code which is not equal to RETURN_OK will trigger a step reply
-	 * with step 0.
+	 * Returning #EXECUTION_FINISHED or a failure code, nothing else needs to
+	 * be done. When needing more steps, return RETURN_OK and issue steps and
+	 * completion manually.
+	 * One "step failed" or completion report must be issued!
 	 */
 	virtual ReturnValue_t executeAction(ActionId_t actionId,
 			MessageQueueId_t commandedBy, const uint8_t* data, size_t size) = 0;