I've got a lot of web pages on this site. A few simple conventions are used to help you navigate through them all. A quick read here will help you find your way around.
Normal links go to pages on other web sites.
These links go to catalogs, indices, search engines, etc. that I make frequent use of, and which are related to page or table where they appear. For example, the chain at the top of my Critical Mass page includes links to the Critical Mass web ring site and a Critical Mass catalog site. This chain features other pages on this web site. In general, I put these collections in tables with a different background color from the page itself, and with visible borders. Other pages may include my own material, but they feature these tables of links to other web pages.