Every item in SDB is provided with a couple of headwords which are shown below. Headwords are all in uppercase, this is not relevant in searching. You can search for any regular expressions. Full-text search is not possible. Keywords presents you a complete list of keywords.
History Comes in handy for people who look up things more often.
Under History you can see what is new. Each new article is listed with date and time while the most new ones are the uppermost. German All articles are available in German too. These articles have been translated from German to English. If you click this there is a link to the German articles as well.