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diff --git a/gs/src/gsccode.h b/gs/src/gsccode.h
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+/* Copyright (C) 1993, 1996, 1997 Aladdin Enterprises.  All rights reserved.
+  
+  This file is part of Aladdin Ghostscript.
+  
+  Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND.  No author
+  or distributor accepts any responsibility for the consequences of using it,
+  or for whether it serves any particular purpose or works at all, unless he
+  or she says so in writing.  Refer to the Aladdin Ghostscript Free Public
+  License (the "License") for full details.
+  
+  Every copy of Aladdin Ghostscript must include a copy of the License,
+  normally in a plain ASCII text file named PUBLIC.  The License grants you
+  the right to copy, modify and redistribute Aladdin Ghostscript, but only
+  under certain conditions described in the License.  Among other things, the
+  License requires that the copyright notice and this notice be preserved on
+  all copies.
+*/
+
+/* gsccode.h */
+/* Types for character codes */
+
+#ifndef gsccode_INCLUDED
+#  define gsccode_INCLUDED
+
+/*
+ * Define a character code.  Normally this is just a single byte from a
+ * string, but because of composite fonts, character codes must be
+ * at least 32 bits.
+ */
+typedef ulong gs_char;
+#define gs_no_char ((gs_char)~0L)
+
+/*
+ * Define a character glyph code, a.k.a. character name.
+ * gs_glyphs from 0 to 2^31-1 are (PostScript) names; gs_glyphs 2^31 and
+ * above are CIDs, biased by 2^31.
+ */
+typedef ulong gs_glyph;
+#define gs_no_glyph ((gs_glyph)0x7fffffff)
+#define gs_min_cid_glyph ((gs_glyph)0x80000000)
+#define gs_max_glyph max_ulong
+
+/* Define a procedure for marking a gs_glyph during garbage collection. */
+typedef bool (*gs_glyph_mark_proc_t)(P2(gs_glyph glyph, void *proc_data));
+
+/* Define a procedure for mapping a gs_glyph to its (string) name. */
+#define gs_proc_glyph_name(proc)\
+  const char *proc(P2(gs_glyph, uint *))
+/* The following typedef is needed because ansi2knr can't handle */
+/* gs_proc_glyph_name((*procname)) in a formal argument list. */
+typedef gs_proc_glyph_name((*gs_proc_glyph_name_t));
+
+/* Define a procedure for accessing the known encodings. */
+#define gs_proc_known_encode(proc)\
+  gs_glyph proc(P2(gs_char, int))
+typedef gs_proc_known_encode((*gs_proc_known_encode_t));
+
+/* Define the callback procedure vector for character to xglyph mapping. */
+typedef struct gx_xfont_callbacks_s {
+	gs_proc_glyph_name((*glyph_name));
+	gs_proc_known_encode((*known_encode));
+} gx_xfont_callbacks;
+
+#endif				/* gsccode_INCLUDED */