For your selection list items to be rendered as buttons, you must modify your default rendering set to specify that selection list items should now be rendered as buttons instead of links (Figure 7).
为了让您的选择列表项目以按钮的形式呈现出来，您必须修改缺省呈现集，规定各个选择列表项目应呈现为按钮而不是链接(图7)。
Let's modify this method to tell us a bit more about the selection.
让我们修改这个方法以告知有关“选择”的更多信息。
When you need to modify your selection of menu options, the easiest way is to modify a given menu.
当需要修改菜单选项的选择时，最容易的方法是修改选定的菜单。
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