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diff --git a/src/dictobject.h b/src/dictobject.h
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+/***********************************************************
+Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Netherlands.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the names of Stichting Mathematisch
+Centrum or CWI not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior permission.
+
+STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
+THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
+FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+******************************************************************/
+
+/*
+Dictionary object type -- mapping from char * to object.
+NB: the key is given as a char *, not as a stringobject.
+These functions set errno for errors. Functions dictremove() and
+dictinsert() return nonzero for errors, getdictsize() returns -1,
+the others NULL. A successful call to dictinsert() calls INCREF()
+for the inserted item.
+*/
+
+extern typeobject Dicttype;
+
+#define is_dictobject(op) ((op)->ob_type == &Dicttype)
+
+extern object *newdictobject PROTO((void));
+extern object *dictlookup PROTO((object *dp, char *key));
+extern int dictinsert PROTO((object *dp, char *key, object *item));
+extern int dictremove PROTO((object *dp, char *key));
+extern int getdictsize PROTO((object *dp));
+extern char *getdictkey PROTO((object *dp, int i));
+extern object *getdictkeys PROTO((object *dp));