Quiz European Train Schedules HyperText is for exploring, and you are unlikely to get into trouble by clicking on whatever link interests you. And don't worry about damaging any hardware or software on your computer by randomly clicking on hypertext links. Exactly where the navigation buttons mentioned above are located depends on your browser. The following image shows the menu of Internet Explorer 3.0 for Windows. Your browser is probably similar.
Most browsers are very intuitive, so just click on things to see what they do.
The exact colors depend on your browser and the document you are viewing. Two common colors for visited and unvisited links are red and blue, respectively, but they depend on the browser and how the document that you are viewing has been written. For example, in the present document the visited and unvisited links will probably be red and blue, respectively, if you are using Internet Explorer with default settings as your browser, but the corresponding colors in the menu frame will probably be gray and black. At the bottom of main pages there may be additional navigation buttons. Notice that not all of these buttons appear on each page.