- In 2.4x, this setting was the lock button in the headers.
- Now, this option can be found in the View menus of all relevant editors
- Basically, this option toggles whether objects (using animation data that's being edited) get updated during animation editor transforms to give realtime feedback on the effects of tweaks.
- By default, this is enabled, since this fits in nicer with 2.5's everything 'live' paradigm. However, it is recommended to disable this on slower computers or when updates for heavy rigs are causing too much workflow lag
- Also, removed some old crufty settings from action editor data
