<description>The hosts files &quot;hosts&quot; and &quot;default.hosts&quot; take effect when the setting option &quot;using hosts&quot; is checked.
The file &quot;hosts&quot; defines IP addresses for domains. Each line has the following format:
[IP address][single space][domain name]
&quot;default.hosts&quot; blocks whole domain trees including all descedant domains. The domains in the hosts file must be 2 or 3 segment domains, such as &quot;yahoo.com&quot; and &quot;finance.yahoo.com&quot;. If the length of the last 2 segments is less than 7, such as &quot;com.</description>