New project

This dialog opens a photogrammetric model in a photogrammetric window or a drawing file in a drawing window, depending on the active tab when you click OK:

Photogrammetric sensors: opens or creates a photogrammetric model.
Drawing file: opens a drawing file.

New project dialog with the Drawing file tab

Digi3D.AI displays this dialog when started without arguments and when selecting File/New/Open photogrammetric model or drawing file... from the menu.