Polaroid PDC 3000 - Manual (Page 103)

Using the PDC-3000 camera 103
Important: When you erase a picture, the picture numbers
change to produce a continuous sequence starting at 1 for all
remaining pictures. When erasing multiple pictures, you
should erase the highest-numbered picture first to avoid
accidentally erasing pictures you want to keep.
6 To change to Capture mode for taking more pictures, press
the Mode button.