A 'Hello World' program is usually the first computer program that people use when learning a programming language. It simply prints 'Hello World!' on a display device and is typically one of the simplest programs possible in any computer language. 'The Hello World Collection' compiled by Wolfram Roesler (with help from many people around the world) includes 421 Hello World programs in many more-or-less well known programming languages, plus 63 human languages (
http://roesler-ac.de/wolfram/hello.htm) [in March 2009].
The display aims to highlight how the combination of human and machine languages demonstrate a multilingual machinic 'confusion of tongues'.