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Answers and rating deltas for

How to restrict a field to take only 4 numeric characters as input?

Author Votes Δ
nwellcome 5 +4.36
Yudhistira Melody Pradana 1 0.00
andyb 1 -0.02
tskuzzy 0 -4.19
BillIsNotALizard 0 0.00
Last visited: Sep 14, 2014, 5:07:29 AM