It's also possible to add or remove menu items or submenus.

添加或删除菜单项或子菜单也是可能的。

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If shoppers scan an unwanted item by accident, they simply select "Remove" from the menu option, scan the item again, and it is removed from the cart.

WSJ: Mobile Checkout Devices Let People Scan and They Shop

In Shanghai and vicinity, some restaurants have taken to remove poultry dishes from the menu altogether until the scare dies down.

FORBES: Bird Flu Claims More Lives In Shanghai

When you remove the pen from its slot, a menu of mostly pen-compatible apps pops up on the side of the screen.

WSJ: Samsung's New Galaxy Note 10.1 Tablet Imitates Pen and Paper - Mossberg Review