Attaching curves

[Sergio Mucino]

Here's a simple question for something we have not found how to do in Softimage. I have two curve objects... a closed square, and a closed circle. I want to join them into a single object without stitching them together or changing their shapes. I just want to have an object that has both curves inside. How can I do this? I've been looking around, and there are ways to blend/merge/stitch curves together, but apparently, not to just attach them into a single object. Anyone knows? Thanks! --