On Context

  Choose On Context from the Help menu to get help on objects
  in the application's window or dialog box.  The objects that you
  can get help on include:  menus, window objects, dialog box
  text entry boxes, and so forth.  When you choose On Context
  from the Help menu, the pointer changes to a question
  mark (?).  You then can point to any object in the application
  window or dialog box and click MB1.  For example, to get
  help on a menu:

  1.  Choose On Context from the Help menu.

  2.  Position the ?  pointer on a menu in the application
      window and click MB1.
      Information on that menu is displayed in the help topic
      window.  You may also see a list of additional topics that
      provide more information.