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+.TH MEDIAN 1 MEDIAN
+.SH NAME
+median - Calculate the median values for a set of groups
+.SH SYNOPSIS
+.B median
+<
+.I INPUT
+.SH DESCRIPTION
+.B median
+takes the first blank space-separated column values and the remainder
+as keys. It will then print the median for each key. As a side effect
+median will print the result sorted by the keys.
+.SH EXAMPLES
+.nf
+$ cat <<EOF | median
+\-10
+2
+4
+3
+50
+EOF
+3
+.fi
+.PP
+.nf
+$ cat <<EOF | median
+\+003  c
+\&.001  a
+\-002  b
+\+001  c
+\-001  b
+\+002  c
+EOF
+\&.001  a
+\-001.5  b
+\+002  c
+.fi
+.SH RATIONALE
+Combining
+.BR sort (1),
+.BR sed (1),
+.BR wc (1),
+.BR expr (1)
+to do this is too much work to do on a regular basis.
+.SH "SEE ALSO"
+.BR sort (1),
+.BR expr (1),
+.BR sets (1)
+.PP
+Full documentation available locally via: info \(aq(median)\(aq
+.SH AUTHORS
+Principal author, Mattias Andrée.  See the COPYING file for the full
+list of authors.
+.SH LICENSE
+Copyright \(co 2014, 2015  Mattias Andrée
+.br
+License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
+.br
+This is free software: you are free to change and redistribute it.
+.br
+There is NO WARRANTY, to the extent permitted by law.
+.SH BUGS
+Please report bugs to https://github.com/maandree/median/issues or to
+maandree@member.fsf.org