Golf already has a single set of rules for playing, equipment, and amatueur status. Yet, currently, there are 6 different handicap systems used around the world. A single worldwide handicap system will enable golfers of all playing ability to play and compete on a fair and equitable basis, in any format, on any course, anywhere around the world.
The posters below summarize the WHS. A consise overview of the changes can be found here (Summary of changes to the World Handicap System).