About bookmarks
A bookmark is a tag that identifies a location, within a document, that is to serve as the destination of a hyperlink. For example, if a document has a bookmark named “section_3″ on its third heading element, a hyperlink on the same page can refer to “#section_3″, causing the Web browser to jump to that location on the page, scrolling the document if necessary. A hyperlink on another document can refer to the bookmark by appending the bookmark name to the URL—for example, http://www.example.com/index.html#section_3. When a user clicks the link, the browser will open the document and jump to the bookmark location.
Bookmarks are especially useful in long documents. For example, if you have a page that contains a long list of terms and definitions, you could put a unique bookmark on each term, and then use the bookmarks to link to individual terms from other documents, or from a term index and the top of the page. It is also common to insert a bookmark at the top of a long page, and then insert links to the top bookmark periodically throughout the page. This saves users the trouble of scrolling back to the top manually.
Bookmarks are not visible in a browser. In Namo WebEditor’s Edit mode, the location of a bookmark is indicated by the icon 
just before the bookmark. If the display of special tag marks is disabled, bookmarks are completely invisible in Edit mode.