window_align_center_menubar

	WINDOW_ALIGN_CENTER_MENUBAR(window_id, field)

	This macro returns a screen column value that will position
	a window centered relative to a menu bar field.

	window_id	ID of reference window
	field		menu bar field number (starts at 1)

	This macro is found in: macro_h

	Related macros:

	WINDOW_ALIGN_BELOW_MENUBAR, WINDOW_ALIGN_CENTER_COORD,
	WINDOW_CENTER_COORD, WINDOW_ABOVE_COORD, WINDOW_BELOW_COORD,
	WINDOW_ABOVE_OR_BELOW_COORD, WINDOW_LEFT_COORD, WINDOW_RIGHT_COORD,
	WINDOW_LEFT_OR_RIGHT_COORD, WINDOW_ALIGN_COORD,
	WINDOW_ALIGN_ABOVE_COORD, WINDOW_ALIGN_BELOW_COORD,
	WINDOW_ALIGN_ABOVE_OR_BELOW_COORD, WINDOW_ALIGN_LEFT_COORD,
	WINDOW_ALIGN_RIGHT_COORD, WINDOW_ALIGN_LEFT_OR_RIGHT_COORD