If by key bindings you mean shortcuts then sure.
If you can't click a hand to grab or un-grab you can hit the "L" key while putting your mouse over the wrist joint to do so.
You can hover your mouse over a joint and hit the "X" Key to hold/relax a joint.
You can press Ctrl+G to bring up the game rules menu
You can press Ctrl+H to bring up the "shaders" menu
And lastly you can press Ctrl+M to bring up the Mod Folder were you can change mods.
You may also Refer
HERE For the answer to any other questions that you might have.
I hope this is what you were looking for if it is i'm glad i could help.
Last edited by cube; Dec 20, 2010 at 12:42 AM.