CentOS - Aug 2017 - C7 and ebtables

I need to set ebtables up on a mini-firewall we've got. I'd like to just
use ebtables-save to dump the rules from another firewall, and restore it
to the new one.

There is *no* manpage* for either ebtables-save or ebtables-restore. Usage
- restore doesn't like -?, -h, or --help, and I have no clue as to what it
will accept. Google is being egregiously useless.

Has anyone used these commands, and/or have some examples of their use?

Thanks in advance.

      mark