The package pst-optexp is a collection of optical components that facilitate easy sketching of optical experimental setups. Mechanisms for proper alignment of different components are provided internally. This way the user does not have to care for proper orientation of the elements. This is version 2.1 For a changelog see file Changes Save the files pst-optexp.sty pst-optexp.tex pst-optexp.pro in any place, where latex or any other TeX program will find it. The pro file should go into $TEXMF$/dvips/pstricks/. pst-optexp uses the extended version of the keyval package. So be sure that you - have installed xkeyval with the special pst-xkey (CTAN: tex-archive/macros/latex/contrib/xkeyval/) - do not load another package after pst-optexp, which loads the old keyval.sty or pst-key.tex 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. -- Christoph Bersch 2009/11/05