Toward development of biped locomotion controls : planar motion control of the kneeless biped standing and walking gaits /

3. When a map, drawing or chart, etc., was pert of the material being photographed the photographer followed a definite method in "sectioning" the material. It is customary to begin photoing at the upper left hand comer of a large sheet and to contir photoing from left to right in equal sections with a small overlap, i ■ vecessary, sectioning is continued again — beginning below the first row and continuing on until complete.