ProtoFun:
Like say if you didn't want your little robot to try to move forward or backward while it's performing a lifting or bending over function? Could you use a delay() command in there to make sure you were only performing the lifting/bending movements and making sure you didn't get thrown off balance by trying to move?
Unfortunately not. The delay() function takes over the whole Arduino while it is running. The best way to restrict the program to one activity is to have what is called a "state" variable (any old variable) that records the state of the system. For example it might be called "bending" and if that variable is TRUE other functions would know not to operate.
...R