I understand the difference between STAAD-Pro and STAAD-III.
I understand that V8i probably means version 8, with the i referring to a minor release or bug fix.
But, what does "series 2" or "series 3" refer to? As a STAAD outsider / competitor, I'm just curious. Is this kind of how the SAP / CSI guys have a Basic, Plus, and Advanced versions of their programs?