+/* Attributes. */
+struct attrset *dict_get_attributes (const struct dictionary *);
+void dict_set_attributes (struct dictionary *, const struct attrset *);
+bool dict_has_attributes (const struct dictionary *);
+
+
+void dict_set_encoding (struct dictionary *d, const char *enc);
+const char *dict_get_encoding (const struct dictionary *d);
+
+
+/* Functions to be called upon dictionary changes. */
+struct dict_callbacks
+ {
+ void (*var_added) (struct dictionary *, int, void *);
+ void (*var_deleted) (struct dictionary *, int, int, int, void *);
+ void (*var_changed) (struct dictionary *, int, void *);
+ void (*var_resized) (struct dictionary *, int, int, void *);
+ void (*weight_changed) (struct dictionary *, int, void *);
+ void (*filter_changed) (struct dictionary *, int, void *);
+ void (*split_changed) (struct dictionary *, void *);
+ void (*var_display_width_changed) (struct dictionary *, int, void *);
+ };
+
+void dict_set_callbacks (struct dictionary *, const struct dict_callbacks *,
+ void *);
+void dict_copy_callbacks (struct dictionary *, const struct dictionary *);
+
+void dict_set_change_callback (struct dictionary *d,
+ void (*changed) (struct dictionary *, void*),
+ void *data);
+