On Fri, 2 Mar 2007, THD wrote:
Therefore, the designer just wanted to make it clearer that "Don't fill in the number of year of Republic of China, but 19xx or 20xx". I don't think there was any intention to cause a lift of debates.
Why not just disallow any number below 1900 or greater than 2007? That should take care of most alternate year-counting systems.
SJ