in p1 the only import option was for a background pict image. you could export poser figures in dxf or rib formats. there were only 4 included props: ball, box, cane & stairs. other included figures were the stick figure, skeleton & mannequin.

p2 was a big step which allowed you to:

import dxf, 3dmf, obj, 3ds & detailer models, and background video

introduced improved models including the business, casual and child figures

added more hand morphs

introduced texture mapping (p1 did use bump maps, for musculature)

provided an animation palette.