The options menu controls options that are applied to ALL windows. Options that apply only to one window are controlled by the options menus for the individual windows.
Input Options: This menu controls how you wish the data files to be input. For instance you may flip the data set top to bottom or left to right at the time of input.
Selection Visibility: This menu controls what windows a selection is seen in. By default when a selection is made it is only visible in the window it is made.
Inquiry Outputs: When a query is made for information about some point or region within the domain this option controls what level of detail of information is given.
Window Refresh: This controls whether plan and surface windows are refreshed automatically or manually. When you have a large number of complex windows open it may be convenient to turn off automatic refresh.