A fiber-tipped pen is composed of a compressed bundle of extremely fine thread-like fibers or filaments that run lengthwise and are held together by some binder or adhesive. On the other hand, the broader felt-tipped marker pen consists of a circular or a rectangular piece of felt-like material at its tip. Under magnification, the surface of the felt appears to have a large number of tiny hair-like protrusions. Hence, felt-tipped pens can be considered to be composed of a collection of "ink-depositing points," which under certain conditions also produce burr striations. A study of the burr striations and other morphological features of felt-tipped pen strokes is reported in this paper. In studying felt-tipped pen writings on white boards, the authors found that contrary to the orientation of burr striations in ball-point pen strokes, those in curved felt-tipped pen strokes run toward the inside edge of the curve in the same general direction as that in which the pen has moved. The fact that the ink of a stroke written on a nonabsorbent surface is erased and displaced by that of the subsequent stroke is also important for deriving the relationship between the orientation of burr striations of a stroke written by a felt-tipped pen and the writing motion that has produced the stroke. 6 figures and 5 references