diff --git a/doc/src/sgml/mvcc.sgml b/doc/src/sgml/mvcc.sgml
new file mode 100644
index a0d6867..e43a3be
*** a/doc/src/sgml/mvcc.sgml
--- b/doc/src/sgml/mvcc.sgml
*************** COMMIT;
*** 422,429 ****
     <para>
      This level is different from Read Committed in that a query in a
      repeatable read transaction sees a snapshot as of the start of the
      <emphasis>transaction</>, not as of the start
!     of the current query within the transaction.  Thus, successive
      <command>SELECT</command> commands within a <emphasis>single</>
      transaction see the same data, i.e., they do not see changes made by
      other transactions that committed after their own transaction started.
--- 422,430 ----
     <para>
      This level is different from Read Committed in that a query in a
      repeatable read transaction sees a snapshot as of the start of the
+     first non-transaction-control statement in the
      <emphasis>transaction</>, not as of the start
!     of the current statement within the transaction.  Thus, successive
      <command>SELECT</command> commands within a <emphasis>single</>
      transaction see the same data, i.e., they do not see changes made by
      other transactions that committed after their own transaction started.