Jean,
Shafting is the light colored shaft on a dark feather. It appears to give the feather a center stripe. Striping is the dark center of a feather that is lighter on the outside edges, most notably in hackle and saddle feathers. Silver males, for example, should have hackle and saddle striping. Stippling is comprised of the fine dots on a body feather, as in silver females. The finer the stippling, the more even a color the feather will be - which is desireable. A common fault of silver females is shafting in the body feathers where there should only be stippling. I think these terms are covered in the Standard of Perfection\'s glossary, but have not looked at it for many moons.