*OmniMount query

I came across the OmniMount command recently, and the help says…
*OmniMount can list all active mounts, or mount named mount point(s) that exist in the Mounts file.
Syntax: *OmniMount [-all | mounts]

Using *OmniMount xxx indeed mounts xxx if it is in the mounts file,
… but using -all will try to mount all saved mounts, not list them!

Is the Help wrong?

what does Omnimount with no (optional) parameters give you?
The quoted syntax info suggests it can be used that way.

*Omnimount with no parms gives nothing back. No output … and no error either.