Save

Saves a model description (its parameters) to a file.

Usage: save($<$file_name$>$ [, $<$attribute$>$])

where $<$file_name$>$ is the name of the file into which the description will be saved; and $<$parameter$>$ is an optional parameter, which allows users to save only one specific parameter. It may be {all, pi, A, B}, if the parameter that is to be saved is all, pi, A or B, respectively.