Altair Engineering [http://www.altair.com/] is a company specialized in product design development and consulting. Its software suite HyperWorks (HyperMesh, HyperView, HyperGraph, HyperStudy, ...) [http://www.altair.com/software/hw.htm] embeds Tcl-Tk. Users can take advantage of the power of this toolkit to build custom macros and applications fully integrated with their products. - Script samples can be seen at the Macros Xchange page [http://www.altair.com/macros/all_macros_multi_page.php] <> Company