A plasma display panel sustain driver that has a decreased flywheel current. The indicia include perpendicularly intersecting center vertical and center horizontal hairlines, and four horizontal range-marker lines disposed at specific angular separations below the horizontal hairline in bisected relationship with the center vertical hairline. The hammermilled straw is preferably Kentucky Bluegrass straw. 5 \u03bcm, as measured in the direction parallel to the surface of the base material, and exhibits an X-ray diffraction pattern having a peak at a diffraction angle 2\u03b8 in the range of from 121. At least one of the p drive voltages changes with at least one of the instruction values of the first group and is applied in common to two or more of the circuit elements at one terminal thereof.