A few things to report: 1) Jack has added Interval regression, the shiny new "intreg" command. It's documented and in the GUI and has an example script. 2) I've just done something that was requested a while back, namely enabled the "restrict" command for nls, mle and gmm. Please test and report any misbehavior! 3) I've added accessors $Fstat and $chisq which retrieve the F-stat or chi-square test for overall fit from the last model. (Most model types have an Fstat but no chisq; the exception is the limited-dependent variable models logit, probit and intreg.) There will be a few new translatable strings in connection with intreg; I'll update gretl.pot shortly. Allin.