A page description language is a file format (and almost a programming language) for describing the contents of a printed page in a higher level than the actual output bitmap.
... (1965-1979)
February 11 - Sir Keith Holyoake, New Zealand Prime Minister (1960-1972)
February 20 - Alexei Kosygin[?], Premier of the Soviet Union[?] (+ 1980)
...