There are two kinds of options that can be passed to Autodir. In the first type, options are for autodir itself and are common irrespective of which module is used. There are other type of options which are specific to the module being used. These options called suboptions and are passed to the module being used differently with main option -o. This is similar to mount command suboptions.
For example, suboptions to the example module autohome can be passed as,
Here realpath, level, noskel are suboptions for autohome module.