书脚：它和书眉相似，只不过排在版心之下。
Running foot: Similar to a running head, only at the bottom of the page.
版心：正文及插图，包括书眉和页码，在书页内所占的面积。
Type area: area occupied by text and on a page, including running head and folio.
版心：正文及插图，包括书眉和页码，在书页内所占的面积。
Type area: area occupied by text and on a page, including running head and folio.
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