Best Format for Submitting multiple documents to EBSA/DOL?

[ERISAatty]

I am preparing a response to a lengthy DOL document Subpoena request.

Has anyone does this recently and/or have any insight on EBSA/DOL's preferred document presentation format with respect to physical organization of the documents?

I am providing description and enumeration in the cover letter, of course, but just don't want to get the physical presentation wrong.

I know IRS no longer likes tabs and binders, but maybe DOL still does?

Thanks for any comments!!