DELNLS,<start>,[end],[stride]
Delete nonlinear soil layer definition created by the NLSLAYER command. This does not modify any information that has been defined by L, SOIL or any other command used to create the linear soil model.
start - starting number of the soil data to delete
end - final number of soil data to delete (default = start)
stride - stride increment for delete (default = 1) The command will warn the user that the default stride was used if the argument is left blank or the user gives a stride value less than 1.