 np=1; nx=400; ny=100; x1=-6; x2=6; y1=197; y2=256; z1=0; z2=55.6; sm=1100; sa=30; vx=12; vy=18; vz=10; dv=200; sx=5.; sy=1; tx=9; ty=9; kx=100; ky=100;




      
     z(x,y).      .          .       .    : 
	np --     , 
	nx, ny --     x  y   , 
	x1, x2 --       x,  
	y1, y2 --       y,  
	z1, z2 --       z,  
	sm --   4 .    ,  1.  0.  3    
	sa --   2 .  = 1  XZ, 2  YZ, 3  XZ+YZ.  = 0 (2 ) 1 () 2 ()
	vx, vy, vz --   ,   
	dv -- 10-        
	sx, sy --       ,   
	tx, ty --    
	kx, ky --    ,    nx, ny,   
    (m000.dat)   (data),      (m000.png)   (pic),   000    np.       ,         m999.dat   (data),       .
      M !!       ,   .     .       .       kx*ky > 65536.        .       .   kx = ky = 180. 
  kx = ky =100.       .  sa     XZ ,   YZ ,    .         1  2  .
       !!      .               .  Z   .      X  Y      sx  sy.
 