"First, ensure that long, multi-topic pages on your site are well-structured and broken into distinct logical sections. Second, ensure that each section has an associated anchor with a descriptive name -- i.e., not just 'Section 2.1' -- and that your page includes a 'table of contents' which links to the individual anchors," he wrote.

The sublinks to page sections will appear when the search engine determines it's relevant to show them, so not all results will have them.

This is another in a long list of improvements Google has made over the years to beef up and extend the usefulness of the much-maligned "10 blue links" of search results.

For example, an ongoing and broad "universal search" initiative has brought links to news articles, images, video clips, maps and other specialty pages to Google's general Web search engine.

In addition, Google suggests related search queries to help users narrow the scope of their search, and offers options to filter results by the date when the page was published, such as in the past 24 hours or the past year.