If linking to a page on your site requires anything more than following an HTML anchor tag, that link may be hidden from the spider.

如果链接到站点上的页面所需的操作不仅仅是沿着html锚标记走，那么这个链接可能会对爬行器隐藏。

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allinanchor: - Conducts a search based on keywords used strictly in the anchor text, or linking text, of third party sites that link to the web pages returned by the Google search.

基于严格的锚文本或链接文本中的关键字，或链接到由Google返回的网页的第三方网站的搜索。

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As an example, an ID on an XHTML element is used for linking within a document — and this is similar to how an anchor name within an HTML document can be used for internal links.

例如，使用XHTML元素的ID在文档内进行链接——这种方式类似于在HTML文档中使用锚点名称进行内部链接。

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