I've looked through 0004-0007. I've only found the following:
(5) 0005
With this read-only option type, application can connect to
connecting to a read-only server in the list of hosts, in case
if there is any read-only servers available, the connection
attempt fails.
"connecting to" can be removed.
in case if there is any read-only servers
-> If There's no read only server
Regards
Takayuki Tsunakawa