Aman and Dave have it, but I want to add something from an ergonomic stand point. If you splay the bars wider it will reduce the amount of pressure put on your wrists and reduce the possibility of wrist fatigue.
When your upper body comes off the bike your wrist bends laterally. Wrist rotation in this direction is limited and when the bars are moved inward there is more pressure on the wrist joint. If they are wider there is less pressure on the wrist joint. May not seem like a big deal, but if you ride a lot, you may start to notice this. Same goes for the angle of the brake and clutch levers. If they are too high, it keeps your wrists in a bent position and can contribute to fatigue. Controls should be located so that your wrist stays as close to straight when sitting on the bike.
When you adjust them make sure you sit on the bike and move the bars side to side to full lock with your hands (and gloves) on the controls to make sure you do not pinch your fingers or the controls hit your bodywork. When you ride it for the first time it may feel a bit awkward. Just give it some time. It made a world of difference for me.
