5.7.2.3 Consistent Display of Menu Options
When menus are provided in different displays, they should be designed so that option lists are consistent in wording and ordering.
5.7.2.4 Minimal Steps in Sequential Menu Selection
When users must step through a sequence of menus to make a selection, the hierarchic menu structure should be designed to minimize the number of steps required.
5.7.2.5 Return to Higher-Level Menus
Users should have to take only one simple key action to return to the next higher level in hierarchic menus.
5.7.2.6 Return to General Menu
Users should have to take only one simple key action to return to the general menu at the top level in hierarchic menus.
5.7.2.7 Explanatory Title for Menu
An explanatory title should be provided for each menu that reflects the nature of the choice to be made, so that the function of the menu is evident to the user.
5.7.2.8 ON/OFF Menu Items
For menu items that can be in an "On" or "Off" state, the "On" state should be indicated by making the item perceptually distinct.
5.7.2.9 Form Filling for Command Entry
Form filling should be provided as an aid for composing complex command entries.
5.7.3 System Operational Information
5.7.3.1 Indicating System Status
The system status should be indicated to users at all times.
5.7.3.2 Operational Mode
The currently selected mode should clearly be indicated, when the results of user action are contingent upon different operational modes.
5.7.3.3 Status and Type of External Sensors
The type and status of external sensors should be permanently indicated.
5.7.3.4 Presentation of Planned and Actual Data
When a device is used for planning it must be clear to the user that this mode is selected so that there is no confusion between the presentation of planned and actual data.
5.7.3.5 Source of Position Information
The information of position should be displayed with an indication of its source.
5.7.3.6 Simulated Operations
Simulated operations should be clearly distinguished from real operations.
