While one calls their sidebar sidebar and the other menu, the main difference between the two Theme's core structures is the use of the header and footer. For the Classic Theme, the header is in an h1 tag and the footer is in a paragraph tag. In the Default Theme, the header is in a div called header and the footer is in the footer div.
基于1个网页-相关网页
There is currently a bug in the default theme that displays both the place bar and the page bar navigation items for the default portal.
目前在缺省主题中有一个 bug，即同时显示缺省门户的地址栏和页面栏导航项目。
Other than bug fixes and a change in the default theme, you can look forward to your application generally working the same (or better) than it did in Flex 3.
除了一些bug修复和默认主题的一点变化外，应用的开发方式与Flex 3相差无几，可能还要好一些。
The Crux and Bluecurve themes, in addition to the default theme, are supported.
除了缺省主题之外，还支持Crux和Bluecurve主题。
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