table protections?

Okay, trying to turn on web access to my table. Pending some changes
to the pg_hba.conf file, I have the following on my tables:

+------------------+----------------------------------------------------+
| Relation | Grant/Revoke Permissions |
+------------------+----------------------------------------------------+
| tblauthors | {"=","www=r"} |
| tblbindings | {"=","www=r"} |
| tblcategories | {"=","www=r"} |
| tblgroups | {"=","www=r"} |
| tblproducts | {"=","www=r"} |
| tblseries | {"=","www=r"} |
| tblsubjects | {"=","www=r"} |
| tbltopics | {"=","www=r"} |
+------------------+----------------------------------------------------+

Note the first "=" in the permissions. What does this mean - that
public has no access? Also, how is the owner dealt with in the
permissions?

Thanks for all the help.

Charles Gilley