When control entries for any particular transaction will be selected from a small set of options, those options should be displayed in a menu added to the working display, rather than requiring a user to remember them or to access a separate menu display.
Additional Information:
A complete display of control options will sometimes leave little room for display of data. If an extensive menu must be added to a working data display, that menu should be provided as a separate window that can temporarily overlay displayed data at user request, but can then be omitted again by further user action.