+void TRACE_surf_host_set_utilization (const char *name, smx_action_t smx_action, double value, double now, double delta);
+void TRACE_surf_host_define_id (const char *name, int host_id);
+void TRACE_surf_host_vivaldi_parse (char *host, double x, double y, double h);
+void TRACE_surf_link_declaration (char *name, double bw, double lat);