REDIPlus uses tabs to categorize the fields/options available to you in dialog boxes. Such categorization makes it easier for you to enter and submit your orders, since you can find the fields/options you want, and skip those you do not. The first tab of entry dialog boxes (e.g., Order Entry, Option Order Entry, Doneaway Entry, Option Doneaway Entry, Specialist Trade Entry, Future Trade Entry, Option Trade Entry) contains the fields/options required to submit an order. The other tabs provide you with optional order entry options and flexibility.
Defaults and Properties dialog boxes use tabs in the same way, though each tab’s fields/options tend to be separate and distinct (as opposed to the entry tabs, which cumulatively make up a single order).