Single-line fonts, ideal for line drawings and small lettering, allow swift engraving of the letters and drawings in a single pass by the cutting tool. Fill fonts create solid, broader letters with smooth edges, for bold, highly visible signs. By overlapping the strokes with a small cutter bit, the body of the letter becomes completely filled and well-formed so that fine serifs can be produced. Notice that once the inside is engraved, the cutter travels around the letter's outer border to engrave a perfect edge. Multi-line fonts offer an elegant look that's well-suited for monograms, plaques, awards and similar uses that require a distinctive, stylized look. To produce such a finished product, the cutting tool engraves the outline and various highlights of each letter.