Do you know where the acronym "PDF" comes from?

PIPA is an acronym for the PROTECT IP Act.

Sam, a rhesus monkey, was one of the most well known monkeys of the space program. His name was an acronym for the U.S. Air Force School of Aviation Medicine at Brooks Air Force Base, Texas. He was launched on December 4, 1959, housed in a cylindrical capsule within the Mercury spacecraft atop a Little Joe rocket in order to test the launch escape system (LES). Approximately one minute into the flight, travelling at a speed of 3685 mph, the Mercury capsule aborted from the Little Joe launch vehicle. After attaining an altitude of 51 miles, the spacecraft landed safely in the Atlantic Ocean. Sam was recovered, several hours later, with no ill effects from his journey.

FANBOYS is an acronym for the most common coordinating conjunctions in the English language.

The European Anti-fraud Office, known by the French acronym OLAF, is responsible for combating fraud against the EU.

TATOEBA could be an acronym in various languages: The All-inclusive Treasury Of Examples Beautifully Arranged.

SOPA is an acronym for the Stop Online Piracy Act.

A backronym is an acronym that's specially constructed to fit an existing word.

SNAFU is an acronym expressing the enlisted man's resigned acceptance of chaos. Situation Normal: All Fucked Up.

Who can tell me what the acronym Tatoeba stands for?