+typedef int (*gl_inst_callback) (graph_config_t *cfg,
+ graph_instance_t *inst, void *user_data);
+
+/*
+ * Functions
+ */
+int gl_add_graph (graph_config_t *cfg);
+
+int gl_config_submit (void);
+
+int gl_graph_get_all (gl_cfg_callback callback,
+ void *user_data);
+
+graph_config_t *gl_graph_get_selected (void);
+
+int gl_graph_instance_get_all (graph_config_t *cfg,
+ gl_inst_callback callback, void *user_data);
+
+int gl_instance_get_all (gl_inst_callback callback,
+ void *user_data);