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diff --git a/info/infomap.h b/info/infomap.h
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+/* infomap.h -- description of a keymap in Info and related functions.
+   $Id: infomap.h,v 1.6 2007/07/01 21:20:30 karl Exp $
+
+   Copyright (C) 1993, 2001, 2004, 2007 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+   Written by Brian Fox (bfox@ai.mit.edu). */
+
+#ifndef INFOMAP_H
+#define INFOMAP_H
+
+#include "info.h"
+
+#define ESC '\033'
+#define DEL '\177'
+#define TAB '\011'      
+#define RET '\r'
+#define LFD '\n'
+#define SPC ' '
+
+#define meta_character_threshold (DEL + 1)
+#define control_character_threshold (SPC)
+
+#define meta_character_bit 0x80
+#define control_character_bit 0x40
+
+#define Meta_p(c) (((c) > meta_character_threshold))
+#define Control_p(c) ((c) < control_character_threshold)
+
+#define Meta(c) ((c) | (meta_character_bit))
+#define UnMeta(c) ((c) & (~meta_character_bit))
+#define Control(c) ((toupper (c)) & (~control_character_bit))
+#define UnControl(c) (tolower ((c) | control_character_bit))
+
+/* A keymap contains one entry for each key in the ASCII set.
+   Each entry consists of a type and a pointer.
+   FUNCTION is the address of a function to run, or the
+   address of a keymap to indirect through.
+   TYPE says which kind of thing FUNCTION is. */
+typedef struct keymap_entry
+{
+  char type;
+  InfoCommand *function;
+} KEYMAP_ENTRY;
+
+typedef KEYMAP_ENTRY *Keymap;
+
+/* The values that TYPE can have in a keymap entry. */
+#define ISFUNC 0
+#define ISKMAP 1
+
+extern Keymap info_keymap;
+extern Keymap echo_area_keymap;
+
+/* Return a new keymap which has all the uppercase letters mapped to run
+   the function info_do_lowercase_version (). */
+extern Keymap keymap_make_keymap (void);
+
+/* Return a new keymap which is a copy of MAP. */
+extern Keymap keymap_copy_keymap (Keymap map, Keymap rootmap,
+    Keymap newroot);
+
+/* Free MAP and it's descendents. */
+extern void keymap_discard_keymap (Keymap map, Keymap rootmap);
+
+/* Initialize the info keymaps. */
+extern void initialize_info_keymaps (void);
+
+#endif /* not INFOMAP_H */