{
  global:
    dg_node_read;
    dg_node_selection_destroy;
    dg_node_select;
    dg_delete;
    dg_exists_p;
    dg_exit;
    dg_extern_create;
    dg_extern_data_to_id;
    dg_extern_id_to_data;
    dg_extern_p;
    dg_id_create;
    dg_id_p;
    dg_identify;
    dg_index_errors_extern;
    dg_index_errors_intern;
    dg_index_errors_relation;
    dg_index_recreate_extern;
    dg_index_recreate_intern;
    dg_index_recreate_relation;
    dg_init;
    dg_init_options_set_defaults;
    dg_initialised;
    dg_intern_data_to_id;
    dg_intern_ensure;
    dg_intern_id_to_data;
    dg_intern_p;
    dg_intern_update;
    dg_mdb_env;
    dg_relation_ensure;
    dg_relation_read;
    dg_relation_selection_destroy;
    dg_relation_select;
    dg_relation_delete;
    dg_root;
    dg_statistics;
    dg_status_description;
    dg_status_group_id_to_name;
    dg_status_name;
    dg_debug_log_ids;
    dg_debug_log_ids_set;
    dg_debug_display_relation_records;
    dg_debug_count_all_btree_entries;
    dg_debug_display_btree_counts;
    dg_debug_display_content_left_to_right;
    dg_debug_display_content_right_to_left;
  local: *;
};