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Answers and rating deltas for

What does the 'x' in the extensions aspx, docx, xlsx, etc. represent?

Author Votes Δ
Oded 11 +0.95
Madhur Ahuja 4 +2.86
Karl Knechtel 0 -0.46
codingbadger 0 -0.37
drhanlau -1 -3.78
Last visited: Sep 14, 2014, 5:07:29 AM