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+/* variables.h -- Description of user visible variables in Info.
+   $Id: variables.h,v 1.9 2008/03/04 09:45:27 gray Exp $
+
+   This file is part of GNU Info, a program for reading online documentation
+   stored in Info format.
+
+   Copyright (C) 1993, 1997, 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 INFO_VARIABLES_H
+#define INFO_VARIABLES_H
+
+/* A variable (in the Info sense) is an integer value with a user-visible
+   name.  You may supply an array of strings to complete over when the
+   variable is set; in that case, the variable is set to the index of the
+   string that the user chose.  If you supply a null list, the user can
+   set the variable to a numeric value. */
+
+/* Structure describing a user visible variable. */
+typedef struct {
+  char *name;                   /* Polite name. */
+  char *doc;                    /* Documentation string. */
+  int *value;                   /* Address of value. */
+  char **choices;               /* Array of strings or NULL if numeric only. */
+} VARIABLE_ALIST;
+
+/* Read the name of an Info variable in the echo area and return the
+   address of a VARIABLE_ALIST member.  A return value of NULL indicates
+   that no variable could be read. */
+extern VARIABLE_ALIST *read_variable_name (const char *prompt, WINDOW *window);
+
+/* Make an array of REFERENCE which actually contains the names of the
+   variables available in Info. */
+extern REFERENCE **make_variable_completions_array (void);
+
+/* Set the value of an info variable. */
+extern void set_variable (WINDOW *window, int count, unsigned char key);
+extern void describe_variable (WINDOW *window, int count, unsigned char key);
+
+/* The list of user-visible variables. */
+extern int auto_footnotes_p;
+extern int auto_tiling_p;
+extern int terminal_use_visible_bell_p;
+extern int info_error_rings_bell_p;
+extern int gc_compressed_files;
+extern int show_index_match;
+extern int info_scroll_behaviour;
+extern int window_scroll_step;
+extern int cursor_movement_scrolls_p;
+extern int ISO_Latin_p;
+extern int scroll_last_node;
+
+#endif /* not INFO_VARIABLES_H */