But Not Selectable 但不能选择
When displaying a Web page to an owner or an administrator, all operations should be selectable by a menu or links; others should not see those operations or they should not be selectable.
在向所有者或管理员显示网页时，所有操作都应该可以通过菜单或链接来选择；其他用户不应该看到这些操作，或者这些操作对他们应该是不可选择的。
Although it also supports a selectable interface, it does not support horizontal scrolling or editing.
尽管它也支持可选择的界面，但不支持水平滚动和编辑。
Button titles should not be selectable because it would be difficult for users to reveal the edit menu without activating the button.
按钮标题是不能够被选择的，因为对用户来说不触发按钮而显示菜单是困难的。
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