pst-slpe.tex -------- 1.2 2008/06/19 \textbackslash psBall (hv) 1.1 2006/06/19 using the extended pst-xkey instead of the old pst-key package; creating a dtx file (hv) 1.0 2005/03/05 More compatible to the other PStricks packages. (RN)