CTAN update: sseq
Update of the sseq package for drawing spectral sequence charts to version 2.0. It now uses pgf graphics instead of xypic, resulting in nicer output and less inexplicable behavior. Many new options and features; consult the manual. Compatible to previous versions 1.0x
This package is located at http://tug.ctan.org/tex-archive/macros/latex/contrib/sseq . More information is at http://tug.ctan.org/pkg/sseq (if the package is new it may take a day for that information to appear). We are supported by the TeX Users Group http://www.tug.org . Please join a users group; see http://www.tug.org/usergroups.html .
sseq – Typesetting spectral sequence charts
The package provides commands to draw spectral sequence diagrams, providing facilities for clipping and arranging multiple symbols so that they do not overlap. The package is built using pgf, and shares that systems large demands for TeX system memory. Its geometric commands are based on a turtle graphics model, and control structures such as loops and conditionals are available.