| 摘要 |
A projector, a projection system and a user interface are disclosed. An example projection system may include a projection device adapted to project an image. A user interface may be used in communication with the projection device and may be configured to control a number of projector settings of the projection device. The user interface may be configured to simultaneously display a first level menu item and a list of second level menu items within a second highlighting outline. Display of the list of second level menu items may be invoked by a selection of the first level menu item.
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