static void RemoveTraceMask(const wxString& str);
// remove all string trace masks
static void ClearTraceMasks();
static void RemoveTraceMask(const wxString& str);
// remove all string trace masks
static void ClearTraceMasks();
// sets the timestamp string: this is used as strftime() format string
// for the log targets which add time stamps to the messages - set it
// sets the timestamp string: this is used as strftime() format string
// for the log targets which add time stamps to the messages - set it