Can't figure it out, and docs aren't helpful about it.

How do I print backslash \, such as in the following line:

.Dl 0 > Ic "dir scsi/sd@3:0,\subdirectory\"

This is for the 1.6.1 INSTALL notes for macppc.  Any help would be
appreciated -- I'd rather work on the docs than try to figure out roff
formatting BS.

I have a iMac blondi with OpenFirmware 3.0

Please respond by email since I'm not subscribed to this list.

Thanks,
  -- JRH