Always use on/off in prefference to transparency for hiding a body part. Setting a material the 'Transparency' value to one, is not in itself suficent to make an actor comlpletly transparent, there are other settings that need to be changed like Trabsparency_Falloff, and Specular_Value, even then the actor may still cast shadows in the P4 renderer. It's much easier and simpler to use on/off. Where transparency is usefull is when you want to make part of a figure transparent and that ppart does not corispond to some body part(s), you can use Transparency in conjunction with a transparency map to make any arbitary area of your figure (or prop) transparent. Q: Can I parent a prop to a body part ( in a pose file too ) ?

You can but I'm wondering exactly what you are trying to achive. Making the prop into a smart prop may be a better solution.

If you do want to use a pose to parent a prop, here is an example of a pose that hides the chest and parents a prop named "box_1" to the head of the currently selected figure. Note that we need to use "actor box_1" and "smartparent". Of course this pose does not load the prop (though It probably could with "readScript"), the prop needs to be in the scene already.

{

version
        {
        number 3
        }

actor chest
        {
        off
        }

actor box_1
        {
        smartparent head
        }
}