Suppose you have normal arrows in one quiver slot in your inventory, and magic arrows in one of the other quiver slots. Is there some quick way of selecting normal or magic arrows in a fight, without having to go the inventory screen and clicking on the required box?

Thanks in advance.

I think that to change arrows, you can rightclick on the quick weapon, "bow" on the main screen and you can select the arrows to use. Hope that it helps.
Peace friends

Yes, This Is True. I Also Think That You Can Go To Your Inventory, Right Click On The Bow, And Press The Button Which Says "Abilities"