I'm not sure what you are actually looking for. The Keybindings is for adding, deleting and changing keybindings shortcuts that suit you best. But many are there as standard to Sonar and should be kept as they are. The reason is so you can ask here which shortcut to use for a given task.
Not all functions and features in Sonar are set with a shortcut. Here if you run across one you can edit it and add your own. One example for me is reset all clip indicators. I have it bound with u.
One other area is to have a keyboard setup that uses the same shortcuts as another program. There are ones for Logic, Cubase and others.