The MENUNEM(), ITEMNUM() and SUBNUM() macros let an application break a menu number down into its component parts--the specific menu number, the item number and the sub-item number. (See the section on "Menu Numbers" earlier in this chapter for details.) Intuition also supplies macros that allow an application to construct a menu number given its components: SHIFTMENU(n) Create a properly masked and shifted specific menu number. SHIFTITEM(n) Create a properly masked and shifted item number. SHIFTSUB(n) Create a properly masked and shifted sub-item number. FULLMENUNUM( menu, item, sub ) Create a complete composite menu number from its components.