Best place to start is in the tutorials here. I don't know how to create mat poses without mat pose edit. Apparantly there is a python in poser 6 that can create mat poses; I don't have a clue how that works sorry, but again there is bound to be a tutorial here. Have you tried looking in Dr. Geeps tutorials? Inj/Rem files can be written,or there is a program called injection pose builder. Not sure if it works on mac though. You can find it at daz you might find tutorials on mat poses there also in tutorial arcana. I hope this helps at least a little. :)