+ * Revision 1.7 1995/02/15 17:42:16 adam
+ * Minor changes of the api of this module. FILE* argument added
+ * to ccl_pr_tree.
+ *
+ * Revision 1.6 1995/02/14 19:55:13 adam
+ * Header files ccl.h/cclp.h are gone! They have been merged an
+ * moved to ../include/ccl.h.
+ * Node kind(s) in ccl_rpn_node have changed names.
+ *
+ * Revision 1.5 1995/02/14 16:20:57 adam
+ * Qualifiers are read from a file now.
+ *
+ * Revision 1.4 1995/02/14 14:12:42 adam
+ * Ranges for ordered qualfiers implemented (e.g. pd=1980-1990).
+ *
+ * Revision 1.3 1995/02/14 10:25:57 adam
+ * The constructions 'qualifier rel term ...' implemented.
+ *
+ * Revision 1.2 1995/02/13 15:15:07 adam