Chain
Chains can be branch from any other module or from itself. It creates hierarchical fk chains for rig.
Chain Attributes
 
- Copy:
- Copy current limb pose. 
- Paste:
- Paste last copied limb pose. 
- Paste Mirror:
- It pastes copied pose as mirrored. 
- Bone:
- Change bones count for chain. 
- Spring:
- It builds chains with additional spring controllers which allow animators to create real time secondary animaions. 
- FK:
- It builds only FK chains.