There are excellent materials on UK and U.S. tax law. Tax Analysts has recently published a CD of tax treaties, which appears to be more complete than the IBDF disc. Internet is an international network of collaborating networks. A 'hyperlink' will take the user from one document to another, by highlighting and clicking. The URL is the uniform resource locator, indicating the web site.
Some sites contain links to other sites.
Netscape Navigator and similar software enables the user to find his way. Text cannot contain a virus, but graphics can. It is not desirable to put one's credit card number on the Net.