In Poser 4 at least you can access the option from the menu by going too Object->Load Morph Target. This can be helpful if double clicking selects the incorrect body part. Note that the obj morphs are very specific they have to be applied to the correct body part and only work on the figure they were designed for so a Vicky morph won't work on the Poser 4 Nude female and vice versa. Usually the names of the obj files are pretty good about describing which body part they need to be applied to. If you get it wrong, you'll get an error message.

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