please help

[max123456789]

i am using the unleashed mod pack and i hit the letter k, it opened a menu and i accidentally unbinded s, so now i cant move backward, how do i get it back to default?[DOUBLEPOST=1382571202][/DOUBLEPOST]is there a reset to default thing?

 

[max123456789]

ok, how do i bind keys then

 

[UniZero]

Go to the options and change it. The K key is related to Modular Powersuits mod.