heyas; i dunno WHY there is a top and bottom half. that's just the way they made it. :) the top part is the geomhandler part, it tells poser where the obj file is and what body parts are which groups in that file. the second half is the channels part -- the rotation orders, morphs, scaling dials, and joint parameters are in that section. it tells poser how the body parts work. i also consider the 'figure' section a third section. it has the materials, the welding and add-childing going on in there. somewhere is an analysis of the whole cr2 file format... check the poser technical board here on renderosity for the url... or ask, somebody has it. :)