'CONSTANT VELOCITY GRADIENT MODEL.' 0 1 1 (CARTESIAN COORDINATES, VELOCITIES, LOSS FACTORS) 0 1 0 1 0 1 (BOUNDARIES OF THE MODEL) 0 SURFACES 1 SIMPLE BLOCK: / (BOUNDED BY NO INTERFACE) 1 COMPLEX BLOCK: 1 / (LIST OF SIMPLE BLOCKS) 'END OF SURFACES' / (NO DATA FOR SURFACES) 'COMPLEX BLOCK' 1 'VP ' 1 (P WAVE VELOCITY) 3 0 0 0 (I.E. VP=W(X3), TENSION=0) 2 (NUMBERS OF GRID POINTS) 0 1 (X3 GRID COORDINATES) 3 1 (VELOCITIES AT GRID POINTS) 'END OF COMPLEX BLOCKS, END OF THE INPUT DATA FOR THE MODEL' / ========================================================================