| 摘要 |
A user interface includes a first menu comprising a first set of selectable options circumferentially disposed on the first menu. In response to a selection of an option from the first menu, a second menu is displayed. The second menu may be concentrically-disposed relative to the first menu. The second menu includes a second set of circumferentially-disposed, selectable options, which may or may not be hierarchically related to the first set of selectable options.
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