A precondition is a fact that must always be true just prior to the execution of some section of code. Preconditions are sometimes tested using assertions within the code itself. Often, preconditions are simply included in the documentation of the affected section of code.
... Games are held in St. Louis, Missouri, USA
Births:
January 5 - Jeane Dixon[?], astrologer (+ 1997)
January 10 - Ray Bolger, actor, singer, dancer (+ 1987)
January ...