decision.i4.v = wn_decide_multiple_c(x.r8.v, y.r8.v,
					     text.i1a.r, text_length.i4.v,
					     [,funcs.fa.r] [,func_data.ga.r]
					     [,title.i1a.r] [,word_wrap.i4.v]

	This routine will display a decision window with "num_switches"
	choices having its upper left hand corner at ("top_row", "left_column").
	It will return a value equal to the number of the switch pressed.
	"text" is an informational text string (prompt) while "text_length"
	is the length of the message string.

	x		x location of the upper left hand corner of the
			window relative to the parent graphic window
	y		y location of the upper left hand corner of the
			window relative to the parent graphic window
	coordinate_type	type of coordinate values passed
			(WN_WORLD_COORDS -> normal window world coordinates,
			 WN_PIXEL_COORDS -> raw pixel coordinates)
	text		informational text string
	text_length	length of text string  (If this value is zero,
			the length of the text string will be determined
			by this routine.  Don't use this feature if there
			are embedded nulls in the text string.)
	line_length	number of characters per line  (If this value is
			zero, the line length will be set to the length of
			the longest line of text.)
	switch_text	null terminated string containing the switch
			labels separated by back slashes
	num_switches	number of switches
	[deflt_choice]	determines the switch field in which the cursor will
			initially be placed (default is 1)
	[text_color]	message text color (default is GREEN)
	[funcs]		addresses of functions to be called upon the pressing
			of each switch (default is NULL)
			(called as follows for popup window mode:
			 dont_exit.i4.v = funcs(wid.i2.v, func_data.g.v,
			(Note: If "dont_exit" has a value of FALSE,
			 decide_multiple_c will return with the
			 value indicating the switch number pressed.
			 Otherwise, it will continue.)
			(called as follows for persistent window mode:
			 funcs(wid.i2.v, func_data.g.v, switch_data.s.r)
			 ("switch_data" is a structure of type
			(Note: Callback functions must be provided for all
			 switches if a persistent window is requested.)
	[func_data]	addresses of data to be passed to "funcs"
			(default is NULL)
	[switch_height]	height of each switch in rows (default is 3)
	[switch_width]	width of each switch in columns
			(default is longest switch text + 2)
	[switch_colors]	array of switch colors (Note: If the first color is
			negative, all switches will be made the same color
			with a value to its absolute value.) (default is GREEN)
	[title]		a null-terminated text string (ie. a quoted literal)
			to be written to the top line of the window. It may
			be no longer than the width of the window minus
			four characters. (default is NULL)
	[word_wrap]	word wrap flag for multiple line messages
			(TRUE -> wrap lines on word boundaries (default),
			 FALSE -> no word wrapping)
	[help_info]	help callback information
			(structure of type HELP_CALLBACK_DATA)
			(default is NULL)
	[switch_help]	array of help callback information structures
			for each switch
			(array of HELP_CALLBACK_DATA structures)
			(default is NULL)
	[options]	dialog options (values may be OR'ed together) (unused)

	This function returns status values as follows:

	CBS_INVARG		invalid number of switches or persistent
				window requested with no callback functions
	CBS_SYNTAX		invalid switch text string passed
	CBS_MEMFAIL		failed in allocating dynamic memory
	CBS_WINDOW_TOO_BIG	window won't fit on screen
	CBS_NOTENB		not enabled for this process
	otherwise		number of switch pressed or
				created window ID (persistent windows only)

	This function requires the following include files:

	cnsparam_h, cbslib_h, macro_h, acnet_errors_h

	Related functions:

	wn_decide_c, wn_acknowledge_c, decide(_c), file_decide_c,
	acknowledge(_c), calc_line_length_c, dialog_setup_c,
	window_restore_hint_c, switch_create_c

	C/C++ usage:

	static const char	text[] = "Message string";
	static const char	switch_text[] = "Switch 1\\Switch 2";
	static const char	title[] = "Title";
	int	decision;
	int	coordinate_type = WN_PIXEL_COORDS;
	int	text_length = 0;
	int	line_length = 0;
	int	num_switches = NUM_SWITCHES;
	int	default_choice = 1;
	int	text_color = GREEN;
	int	switch_height = 3;
	int	switch_width = 10;
	int	word_wrap = TRUE;
	static const int	switch_colors[NUM_SWITCHES] = {GREEN, YELLOW};
	unsigned int	options = 0;
	double	x = 0;
	double	y = 0;
	int	(**funcs)() = (int (**)(short, void *, int)) NULL;
	void	**func_data = (void **) NULL;

	decision = wn_decide_multiple_c(x,y,coordinate_type,text,