Thank you very much Kenneth. I was looking for that word in perl language (cash) too. I read that "undef" tells perl to remove all formatting (like \n) indicators from the text. So, what does this line do?

my($u_value, $p_value, $mc_value) = (undef) x 3

thanks again for your time and great great help

In reply to Re^4: tab delimited extraction, formatting the output by Anonymous Monk
in thread tab delimited extraction, formatting the output by zzgulu

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