10-19-2011
the string ABCDEFGH starts from the start position column+1. So it starts from position 1235, the character A is at position 1235 and the last character H is at 1242. I want to extract the sub-string starting at POS1 and ending at POS2 not including POS1. So in this case the result would be the character in position 1237 which is D. For N2, the substring is between 1248 and 1250, basically 1249 and 1250 not including 1248, the result is HB.
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