simplest (3) [Avatar] Offline
This appears to be well out of date now. I don't think version 3.0 ever was released, despite the announcement in 2010:
regina.leo (262) [Avatar] Offline
Re: Obtuse Software’s zigGIS plug-in (page 6)
You are right. Unfortunately we haven't gotten to finishing updating the front matter and the front matter accidentally got included in last MEAP so probably more than that is out of date on it.