A master/detail flow is an interface design concept whereby a list of items (referred to as the master list) is displayed to the user. On selecting an item from the list, additional information relating to that item is then presented to the user within a detail pane. An email application might, for example, consist of a master list of received messages consisting of the address of the sender and the subject of the message. Upon selection of a message from the master list, the body of the email message would appear within the detail pane.
On tablet sized Android device displays in landscape orientation, the master list appears in a narrow vertical panel along the left-hand edge of the screen. The remainder of the display is devoted to the detail pane in an arrangement referred to as two-pane mode. Figure 52-1, for example, shows the master/detail, two-pane arrangement with master items listed and the content of item one displayed in the detail pane:
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