This should be at your local mirror.
Thanks again, Jim Hef{}feron Saint Michael's College
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The following information was provided by our fellow contributor:
Name of contribution: luasseq Version number: 2.1 Author's name: Tilman Bauer Location on CTAN: /macros/luatex/latex/ Summary description: drawing spectral sequences in lualatex (improved version of sseq) License type: lppl
Announcement text: ---------------------------------------------------------------------- This is an update of my sseq package for drawing spectral sequences for use with lualatex. The speed and memory requirements are much higher and lower, respectively. There are also a number of new features, consult the documentation for details. ----------------------------------------------------------------------
This package is at http://tug.ctan.org/tex-archive/macros/luatex/latex/luasseq . Information is at http://tug.ctan.org/pkg/luasseq (it may take a day for the information to appear). We are supported by the TeX Users Group http://www.tug.org . For your users group see http://www.tug.org/usergroups.html .