1 files changed, 12 insertions, 11 deletions

diff --git a/doc/src/sgml/protocol.sgml b/doc/src/sgml/protocol.sgml
index c4d3853cbf2..4cfd9767f7c 100644
--- a/doc/src/sgml/protocol.sgml
+++ b/doc/src/sgml/protocol.sgml
@@ -189,7 +189,7 @@
   </sect2>
 
   <sect2 id="protocol-versions">
-   <title>Protocol versions</title>
+   <title>Protocol Versions</title>
 
    <para>
     The current, latest version of the protocol is version 3.2. However, for
@@ -226,7 +226,7 @@
    </para>
 
    <table id="protocol-versions-table">
-    <title>Protocol versions</title>
+    <title>Protocol Versions</title>
 
     <tgroup cols="3">
      <thead>
@@ -6081,13 +6081,14 @@ psql "dbname=postgres replication=database" -c "IDENTIFY_SYSTEM;"
       </varlistentry>
 
       <varlistentry>
-       <term>Int32(196608)</term>
+       <term>Int32</term>
        <listitem>
         <para>
          The protocol version number.  The most significant 16 bits are
-         the major version number (3 for the protocol described here).
-         The least significant 16 bits are the minor version number
-         (0 for the protocol described here).
+         the major version number. The least significant 16 bits are the minor
+         version number. As an example protocol version 3.2 is represented as
+         <literal>196610</literal> in decimal or more clearly as
+         <literal>0x00030002</literal> in hexadecimal.
         </para>
        </listitem>
       </varlistentry>
@@ -7292,8 +7293,8 @@ psql "dbname=postgres replication=database" -c "IDENTIFY_SYSTEM;"
        <term>Int64 (XLogRecPtr)</term>
        <listitem>
         <para>
-         The LSN of the abort. This field is available since protocol version
-         4.
+         The LSN of the abort operation, present only when streaming is set to parallel.
+         This field is available since protocol version 4.
         </para>
        </listitem>
       </varlistentry>
@@ -7302,9 +7303,9 @@ psql "dbname=postgres replication=database" -c "IDENTIFY_SYSTEM;"
        <term>Int64 (TimestampTz)</term>
        <listitem>
         <para>
-         Abort timestamp of the transaction. The value is in number
-         of microseconds since PostgreSQL epoch (2000-01-01). This field is
-         available since protocol version 4.
+         Abort timestamp of the transaction, present only when streaming is set to
+         parallel. The value is in number of microseconds since PostgreSQL epoch (2000-01-01).
+         This field is available since protocol version 4.
         </para>
        </listitem>
       </varlistentry>