Nshell code can now be concatenated to the generated script using the -c parameter that should be the path to the file that will be concatenated.
Fixed problem where empty string would be the set as the default for numeric parameters when no default value was provided.
Zone (-z) is now a required parameter.
Changed default value for numeric parameters that do not have default values to "default". This doesn't interferes with any other numeric value set by the user (e.g. 0, -1)