This page exists within the Old ArtZone Wiki section of this site. Read the information presented on the linked page to better understand the significance of this fact.
When you transform a body part, it sometimes moves other body parts at the same time. However, you can use pins to prevent selected body parts from being moved or changed accidentally.
It is not necessary to pin a bone. If no bones are pinned, then the figure’s root bone (the hip in most figures) will act as the pinned bone. After you pin another bone on a figure, the parent bone (such as the hip) moves freely as part of the pose as long as it lies between a pinned bone and the bone that you are manipulating.
It’s easy to figure out what happens when you pin certain bones. Simply pin the bones you want to keep in place, then click and hold the bone you want to move (just don’t move the mouse.) You will then see exactly which bones will be affected.
Pinning options are shown below and work as follows: