| 摘要 |
A method edits an object having a current state. A first level of an input device is activated to indicate an intent to edit the object, and the current state is stored in response to activating the first level. The object is edited to a next state. The next state is rejected by deactivating the first level, and restoring the current state. The next state is accepted by activating the second level of the input device, and replacing the current state with the next state.
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