void programming_error (string s, string location = "");
void non_fatal_error (string, string location = "");
void warning (string s, string location = "");
-void successful (string s, string location = "");
+void basic_progress (string s, string location = "");
/* progress_indication does by default *NOT* start on a new line */
void progress_indication (string s, bool newline = false, string location = "");
void message (string s, bool newline = true, string location = "");