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1.1 ! root 1: .TH TSORT 1 ! 2: .CT 1 files ! 3: .SH NAME ! 4: tsort \- topological sort ! 5: .SH SYNOPSIS ! 6: .B tsort ! 7: [ ! 8: .I file ! 9: ] ! 10: .SH DESCRIPTION ! 11: .I Tsort ! 12: produces on the standard output a totally ordered list of items ! 13: consistent with a partial ordering of items ! 14: mentioned in the input ! 15: .IR file . ! 16: If no ! 17: .I file ! 18: is specified, the standard input is understood. ! 19: .PP ! 20: The input consists of pairs of items (nonempty strings) ! 21: separated by blanks. ! 22: Pairs of different items indicate ordering. ! 23: Pairs of identical items indicate presence, but not ordering. ! 24: .SH "SEE ALSO" ! 25: .IR lorder (1) ! 26: .SH DIAGNOSTICS ! 27: Odd data: there is an odd number of fields in the input file.
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