Why are some links underlined in green?
Links to other websites are underlined in green for your convenience. These links open in a new browser window, usually with a removable narrow top frame, so that you do not lose your starting place, however far you explore the new link. A few of the sites we link to use a Javascript code to prevent their sites being retained within a frame, or have specifically asked that we not link to them in this way. Close these new windows manually when you have visited the site. External links on this site to other web-pages are provided in good faith, but we are not responsible for their opinions, content or privacy policy, their ongoing links, or any adverts and popups they carry. (For instance, we link to appropriate Wikipedia pages which are excellent for concise factual summaries and ongoing background link. This does not necessarily imply approval of Wikipedia pages which are shaped by the worldview and opinion of the contributor.) Also links may cease to work, or domains lapse and be take
