Suppose you want to customize the MotionBuilder keyboard shortcuts (for example, so you can use F1 for something else other than “Help”).

The MotionBuilder keyboard shortcuts are stored in text configuration files that you can find here:

C:\Program Files\Autodesk\MotionBuilder 2012 (64-bit)\bin\config\Keyboard

For example, in the MotionBuilder.txt config file, look for this line:

action.global.help            = {NONE:F1*DN}

You could change that and use F1 for one of the other actions.