I've updated the software with 3 different mechanisms through which one may capture 2 stereoscopic images for 3D evaluation:

1. Single camera taking 2 side-by-side images by moving in between captures. (See "snap_alt_image" in ProcessStep.py and in the procedure generator)

2. Two independent cameras that have been temporarily moved side by side. (See "alt_image_camera" in ProcessStep.py and in the procedure generator)

3. Two cameras permanently affixed side by side, and behave as a single camera, but return 2 images instead of one when asked for a snapshot.

So now it's easy to use 3D vision in evaluating movement positioning, validating pre-conditions, and verifying the results of a step!