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PTX (VI)                     3/15/72                     PTX (VI)





NAME            ptx --  permuted index



SYNOPSIS        ptx input output



DESCRIPTION     ptx generates a permuted index from file input on

                file output.  It has three phases: the first does

                the permutation, generating one line for each

                keyword in an input line.  The keyword is rotated

                to the front.  The permuted file is then sorted.

                Finally the sorted lines are rotated so the key-

                word comes at the middle of the page.



                input should be edited to remove useless lines.

                The following words are suppressed:  "a", "and",

                "as", "is", "for", "of", "on", "or", "the", "to",

                "up".



                The index for this manual was generated using

                ptx.



FILES           --



SEE ALSO        sort(I)



DIAGNOSTICS     some



BUGS            --