OK. How about matrix and scalar names, are the output-formatting constr aints applicable for these too? I don't think the variable length is the most important question for gretl, there are other much more important questions, but if it was not too hard to implement it would make it easier to write functions if longer names were allowed, especially for matrices and scalars. Andreas cottrell(a)wfu.edu @ INTERNET skrev 2007-10-29 14:45:58 : lengths? characters.