did_it.i4.v = window_write_string_c(window_id.i2.v, row.i4.v,
					    column.i4.v, string.i1a.r,
					    field_length.i4.v, color.i4.v,

	This routine will write a text string to a window.  A field length
	is specified which may be longer than the string passed.  If it
	is longer, the text string can be left justified, right justified,
	or centered in the field.

	window_id	window ID (use WMNGR_BACKGROUND for background window)
	row, column	starting window coordinate location
			(1,1 is the location inside the upper left hand
			 corner of a bordered window or 0,0 for a borderless
	string		string to be written (can be null terminated)
			(The length of this string can be less than that
			 of the field in which it is displayed in which
			 case the rest of the field will be filled with
			 blanks.  If the string is longer than the field
			 length, it will be truncated to the field length.)
	field_length	length of field to display string in
			(If a value of zero is passed for this argument, the
			 length of the passed string is determined and used.)
	color		display color  (If a background color other than
			black is desired, a compound color value can be
			constructed using tv_colors or TV_COLORS_WBLINK.)
			(constants are in 'cnsparam')
	justify		type of justification of the string in the field
			(STR_JUSTIFY_NONE -> don't justify the text string,
			 STR_JUSTIFY_LEFT -> left justify,
			 STR_JUSTIFY_RIGHT -> right justify,
			 STR_JUSTIFY_CENTER -> center justify)

	This function returns status values as follows:

	TRUE			some characters were written to the window
	FALSE			no characters were written to the window

	This function requires the following include files:

	cnsparam_h, cbslib_h

	Related functions:

	window_tvm(_c), window_tvmx(_c), btvm(_c), btvmx(_c),
	window_write_with_carriage_control_c, window_draw_char_c,
	window_entry_to_row_c, window_display_value(_c),
	window_write_line_c, window_write_xchar_line_c,
	window_write_scroll_c, window_write_scroll_xchar_c,
	window_center_text(_c), window_vertical_text(_c),
	window_justify_text_c, window_up_case_c, window_down_case_c,
	window_text_fill(_c), window_read_text_c, window_input_value(_c),
	window_construct(_c), tv_colors, TV_COLORS_WBLINK, intro_tv_windows

	C/C++ usage:

	static const char	string[] = "String";
	short	window_id;
	int	did_it;
	int	row = 1;
	int	column = 1;
	int	field_length = 10;
	int	color = WHITE;
	int	justify = STR_JUSTIFY_CENTER;

	did_it = window_write_string_c(window_id,row,column,string,