"The basic idea behind open source is very simple. When programmers on
the Internet can read, redistribute, and modify the source for a piece
of software, it evolves. People improve it, people adapt it, people
fix bugs. And this can happen at a speed that, if one is used to the
slow pace of conventional software development, seems astonishing...
...The Open Source pages exist to make this case to the commercial world." - Introduction to Open Source - www.opensource.org
* Hungarian Rings
This puzzle consists of two intersecting rings made up of a number of coloured balls. The rings of balls intersect at two places, so they share two of the balls. Each ring of balls can be turned, so the balls can be mixed.