diff --git a/docs/config.html b/docs/config.html
index cab3610..ca8ae69 100644
--- a/docs/config.html
+++ b/docs/config.html
@@ -177,10 +177,13 @@ versioning feature to be used.
0x2: Fake MS SQL Server so that MS Access recognizes PostgreSQL's serial type as AutoNumber type.
0x4: Reply ANSI (not Unicode) char types for the inquiries from applications. Try to check this bit when your applications don't seem to be good at handling Unicode data.
-
Protocol: Note that when using SSL connections this setting is ignored.
+Protocol: The libpq protocol version to use.
+This option controls two aspects of the connection, the libpq protocol version and the level of rollback on errors.
+For historical reasons the libpq protocol version is encoded as a PostgreSQL version number. The libpq protocol version used is the highest version, the given PostgreSQL server version supports.
+The level of rollback on errors is optional and is a dash separated suffix number as described below.
-- 7.4+: Use the 7.4(V3) protocol. This is currently the only option.
+- 7.4+: Use the 7.4(V3) protocol. This is currently the only supported libpq protocol and this part of the parameter is currently ignored.
Level of rollback on errors: Specifies what to rollback should an
@@ -194,9 +197,9 @@ error.
Statement(2): Rollback the statement.
-Notes in a setup: This specification is set up with a PROTOCOL option parameter.
-PROTOCOL=[6.2|6.3|6.4|7.4][-(0|1|2)]
-default value is a sentence unit (it is a transaction unit before 8.0).
+Setup note: This specification is set up with the PROTOCOL option parameter.
+PROTOCOL=7.4-(0|1|2)
+default value is Statement (it is Transaction for servers before 8.0).