A new package has been installed on tug.ctan.org and it should make its way to your favorite local mirror in a day or two.

Thanks for the upload, Jim Hefferon

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The following information was provided by the package's contributor.

Name of contribution: sseq Author's name: Tilman Bauer Location on CTAN: macros/latex/contrib/sseq Summary description: Drawing spectral sequence charts in LaTeX License type: lppl

Announcement text given by the package's contributor: - - ---------------------------------------------------------------------- This package provides a new LaTeX environment for inline typesetting of spectral sequence charts (certain two-dimensional diagrams coming up in mathematics, in particular in topology and algebra). It is built on top of Xy-pic. - - ----------------------------------------------------------------------

You can have a look at the package at http://tug.ctan.org/tex-archive/macros/latex/contrib/sseq although you may get a better network connection by visiting a mirror of CTAN that is near to you; see http://www.ctan.org/tex-archive/README.mirrors