It used to be possible to complete most functions simply by hitting the Enter key on my keyboard. Now many of the same functions require clicking the green check mark. I have to move the mouse to the check mark and click it, or else right-click to bring up a check mark and then click it.

Either way, this is a big step in the wrong direction ergonomically. Even though the mouse was invented at my workplace, I am no fan. Those of us suffering from RSI are now suffering more. Why was this change made? How is it possibly justified? How can I change it back?

This is SW2011 SP5.0.