external tools - their definition file

Hi, I am creating XML file, which is defining the set of external tools, so they can be easily executed from Idea.

I would like to ask, if there is a chance:

1) to insert separator between tools
(something like \toolSet\separator)

2) to create submenu under with external tools
(something like \toolSet\toolSet\tool\...)

3) to specify icon for external tool in the XML file
(something like \toolSet\tool\@icon...)

Thank you for your feedback!

Milan