box
box3d
4                      input number of levels: (1, 2, 3,... etc.?):
0                      input z min:
5                      input z max:
1                      input gain (0=custom,1=uniform,other=geometric spacing):
n                      This is for CEM: yes or no:
P                      Enter Z (5) boundary condition (P,v,O):
P                      Enter Z (6) boundary condition (v,O):
y                      Formatted .rea file? (y or Y):