Batch iso <=> cso converter.

[vsub_]

I can easily(probably...if I have time)add it but I have few questions about the command lines.
1.--threads=N,is there is a limit for the threads
2.--use-METHOD,in place of the METHOD,I have to type the name of the compression method right?
3.--no-METHOD,this is the whole command line,I don't have to change METHOD with anything else(what exactly is the point of this command line if(if I understand it correctly)will not compress the image,just rebuild the image,save it as cso and use something like level 0 compression)