第一个图形是类的标题框，而另一个图形被指派为内容窗格。

The first figure is the title box for the class, while another figure is designated as the contents pane.

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如果你在标题框中输入了文本，那个这个文本就会作为图片的替换文本出现。

If you entered text in the Title box, then this text will appear as the Alt text for the photo.

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例如，很多页面可能都有标题、页面引导、搜索框和水平分割符。

For example, many pages might have a header title, a breadcrumb, a search box, and a horizontal divider.

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