-- Peach request (from wiki feature request list) --
When translating a bone using Auto-IK, you can now use the ScrollWheel on the Mouse or the Page Up/Down keys to adjust the chain length.
Notes:
* Up decreases the length, while Down increases it.
* The previously used chain-length is stored per scene
* Currently, it might be too sensitive. Also, it would help to have some kind of indication of the current chain-length somewhere...
* The chain length specified this way determines the MAXIMUM chain length possible for all chains (if 0, then the default chain-length is used). Chains are clamped to have a chain length which does not exceed the default chain length. This restriction may be removed following further feedback...
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