double value, const char *what);
XBT_PUBLIC(const char *) TRACE_node_name (xbt_node_t node);
XBT_PUBLIC(xbt_graph_t) TRACE_platform_graph (void);
+XBT_PUBLIC(void) TRACE_platform_graph_export_graphviz (xbt_graph_t g, const char *filename);
XBT_PUBLIC(void) TRACE_user_link_variable(double time, const char *resource,
const char *variable,
double value, const char *what);