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Macuser wrote..."Any carry forward non-deductible contributions on line 2,.."

I do not understand this part, about "any carry forward..."

 

My balance in the traditional IRA in 2015 was about $250 which came from years ago (probably a contribution in 1990s that I do not remember.)  The $250 was sitting there and forgotten all this time .   Do i put the $250 on line 2?

 

Thanks