Günter Guillaume (1 February 1927 – 10 April 1995) was an East German spy who gathered intelligence as an agent for East Germany's secret service, the Stasi, in West Germany. Guillaume became West German chancellor Willy Brandt's secretary, and his discovery as a spy in 1973 led to Brandt's downfall in the Guillaume affair. Günter Karl Heinz Guillaume was born on 1 February 1927, at 31 Choriner Straße in Prenzlauer Berg, then a working-class district of Berlin.
In typography, all caps (short for "all capitals") refers to text or font in which all letters are capital letters; for example, THIS TEXT IS IN ALL CAPS. They are commonly seen in legal documents, the titles on book covers, in advertisements and in newspaper headlines. Short strings of words in capital letters appear bolder and "louder" than mixed case, and this is sometimes referred to as "screaming" or "shouting". All caps can also be used to indicate that a given word is an acronym.