As I try to get 1.6.0 ready, I'm also keeping an eye on the changes that will come with 1.6.1, in particular a big change in the way "genr" works internally. With this in mind, I've recently changed a few things pre-emptively, so there's not so much to be altered after the 1.6.0 release. Probably the most relevant change to date is that, for random filling of matrices you now use muniform(rows, cols) mnormal(rows, cols) The point is that under the new scheme these functions, which return matrices, will have to be distinct from normal() and uniform(), which return series. This is because genr will be more flexible with regard to the handling of variant types, on which more later... Allin.