Added some comments.
Added some comments.

ioannis-e/vld,erdincay/vld,ioannis-e/vld,smanders/vld,KindDragon/vld,smanders/vld,erdincay/vld,dmoulding/vld,slideclick/vld,akaStiX/vld,KindDragon/vld,slideclick/vld,akaStiX/vld,dmoulding/vld,zcnet4/vld,zcnet4/vld