This package is similar to the 'msc' package in that it provides macros for typesetting a variant of sequence diagrams, in this case the Live Sequence Charts of Damm and Harel. It supports the full LSC language of the original LSC paper, the Klose-extensions for formal verification and some of the Harel- extensions for the Play-In/Play-Out approach (cf. the manual). This material is subject to the LaTeX Project Public License. See http://www.ctan.org/tex-archive/help/Catalogue/licenses.lppl.html for the details of that license.