1.1 --- a/src/sync_api.h	Thu Jan 30 17:35:53 2020 +0100
     1.2 +++ b/src/sync_api.h	Thu Jan 30 17:37:39 2020 +0100
     1.3 @@ -126,6 +126,9 @@
     1.4  //
     1.5  //      do not return from start_sync() before register_sync_callbacks() was
     1.6  //      executed
     1.7 +//
     1.8 +//      when execution of the sync state machine ends a call to
     1.9 +//      unregister_sync_callbacks() is required
    1.10  
    1.11  DYNAMIC_API PEP_STATUS register_sync_callbacks(
    1.12          PEP_SESSION session,