Confusing defaults documentation on bob.bio.base scripts

Created by: anjos

Example:

Directories that can be changed according to your requirements:
  -T DIR, --temp-directory DIR
                        The directory for temporary files, default is:
                        /idiap/temp/aanjos/database-name/sub-directory.
                        (default: None)
  -R DIR, --result-directory DIR
                        The directory for resulting score files, default is:
                        /idiap/user/aanjos/database-name/sub-directory.
                        (default: None)

What is the right "default"?