One question...

Theme: Pad, soldering point, via, plated-through hole

How can I change the drill holes of all vias to 25 mil?
Use the "Selection assistant" in menu "Edit" to select all vias:

1 (Fig. 1: All vias selected)

After clicking [OK] and [Close] directly type the key [e] for edit and set the desired diameter in the opening dialog for vias.