The module allows to set many parent options per child, and display the child option only if appropriate values of all parents are selected (or if any of appropriate values of parent options is selected, depending on the settings).
The module allows to use the same parent option for many different child options. Depending on the settings, child options can be displayed on selecting the same or different values of their parent.
The module allows to set a child option to be a parent for other options. The only limit is the option type (to be used as a parent, an option should have type 'Radio', 'Select', 'Image' or 'Checkbox').
The module works (shows and hides child options depending on selected values of their parent options) on the product page in the customer section and on the order edit page in the admin section.
The module has its own simple export/import feature to export and import parent-child dependencies of product options (format XLS, uses PHPExcel).