On Thursday, November 29, 2012 6:20:16 PM UTC-5, John Cochrane wrote:

There is no rules-required official scoring program. Use a slide rule

if you want to. 1-26ers use their own program.

There is no rules-required scoring program for US regional contests. National contests mandate Winscore. Other program will be considered for national contests only after successfuly scoring a regional contest.