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When multiple bones diverge from one bone, if the bones of each branch moves independently
using Parent and Children, it sometimes causes the crack of polygons in the root part of those branches.
In case with the following image, there is the bone of the root of which Rest Length is small
in the center of the object, and there are 4 pairs of bones set parented 4 pairs.

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The three bones at the tip are set by Parent and Children, and are made so that the bone of
each branch moves independently. The bone in the most inner side absorbs the affection of
the bones around by being set to All Bones.
Setting All Bone
The above sample scenes are included in Samples/poyoo folder. Each bone is set as the following chart.
| Bone | Influence | Fall Off |
| Root | All Bones | 1 / Distance^8 |
| A1 | All Bones | 1 / Distance^8 |
| A2 | Parent and Children | 1 / Distance^4 |
| A3 | Parent and Children | 1 / Distance^4 |
| A4 | Parent and Children | 1 / Distance^4 |
| B1 | All Bones | 1 / Distance^8 |
| B2 | Parent and Children | 1 / Distance^4 |
| B3 | Parent and Children | 1 / Distance^4 |
| B4 | Parent and Children | 1 / Distance^4 |
| C1 | All Bones | 1 / Distance^8 |
| C2 | Parent and Children | 1 / Distance^4 |
| C3 | Parent and Children | 1 / Distance^4 |
| C4 | Parent and Children | 1 / Distance^4 |
| D1 | All Bones | 1 / Distance^8 |
| D2 | Parent and Children | 1 / Distance^4 |
| D3 | Parent and Children | 1 / Distance^4 |
| D4 | Parent and Children | 1 / Distance^4 |
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