minor clarification in dev_info.dox

doc/src/dev_info.dox

@@ -32,7 +32,8 @@ Last but not least, a new tests needs to be provided to check for the correctnes
 
 \subsection dev_tips_debug_communication Communication
 
-- YAC can be compiled with macros that help debug the communication
+- to help debugging the communication within YAC, you can compile communicator.c
+  with the following compiler macros
   - \code DEBUG \endcode verbose output on nearly all communication calls within
     YAC
   - \code DEBUG_TAGS \endcode all tag strings and their associated tags will be