work on the comments and Rnw file.


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/semtools@306 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
remove sim1 and sim2, so we can start a new simulation.


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/semtools@307 edb9625f-4e0d-4859-8d74-9fd3b1da38cb