*** a/doc/src/sgml/config.sgml
--- b/doc/src/sgml/config.sgml
***************
*** 3527,3534 **** local0.*    /var/log/postgresql
         <para>
          Causes each attempted connection to the server to be logged,
          as well as successful completion of client authentication.
!         This parameter can only be set in the <filename>postgresql.conf</>
!         file or on the server command line.  The default is off.
         </para>
  
         <note>
--- 3527,3534 ----
         <para>
          Causes each attempted connection to the server to be logged,
          as well as successful completion of client authentication.
!         This parameter cannot be changed after session start.
!         The default is off.
         </para>
  
         <note>
***************
*** 3553,3560 **** local0.*    /var/log/postgresql
          <varname>log_connections</varname> but at session termination,
          and includes the duration of the session.  This is off by
          default.
!         This parameter can only be set in the <filename>postgresql.conf</>
!         file or on the server command line.
         </para>
        </listitem>
       </varlistentry>
--- 3553,3559 ----
          <varname>log_connections</varname> but at session termination,
          and includes the duration of the session.  This is off by
          default.
!         This parameter cannot be changed after session start.
         </para>
        </listitem>
       </varlistentry>