+void ccl_pr_tree (struct ccl_rpn_node *rpn);
+
+void ccl_qual_add (CCL_bibset b, const char *name, int no, int *attr);
+void ccl_qual_file (CCL_bibset bibset, FILE *inf);
+CCL_bibset ccl_qual_mk (void);
+void ccl_qual_rm (CCL_bibset *b);
+struct ccl_rpn_attr *ccl_qual_search (CCL_bibset b, const char *name, int len);
+
+
+
+/* use (1)
+
+ relation (2)
+ -1 none