On Wed, 5 Oct 2011, Giuseppe Vittucci wrote: At present, there isn't. But I guess it wouldn't be too difficult to generalize what we currently have in place for VECM restrictions. This is something we could look into after gretl 1.9.6 is released -- right now our efforts are directed towards that. BTW, it's true, the --jitter option is not mentioned in the command help for "restrict", but we do add the sentences, "Note that some special considerations apply in the case of testing restrictions on Vector Error Correction Models. Please see the Gretl User's Guide for details." Since --jitter is a VECM-only option, I think it's reasonable, or at least defensible (!), that it's not documented in the generic help. Allin Cottrell