diff --git a/doc/src/sgml/protocol.sgml b/doc/src/sgml/protocol.sgml
new file mode 100644
index e725563..8778c58
*** a/doc/src/sgml/protocol.sgml
--- b/doc/src/sgml/protocol.sgml
*************** This section describes the base data typ
*** 1819,1825 ****
  </term>
  <listitem>
  <para>
!                 An <replaceable>n</replaceable>-bit integer in network byte
                  order (most significant byte first).
                  If <replaceable>i</replaceable> is specified it
                  is the exact value that will appear, otherwise the value
--- 1819,1825 ----
  </term>
  <listitem>
  <para>
!                 An <replaceable>n</replaceable>-bit signed integer in network byte
                  order (most significant byte first).
                  If <replaceable>i</replaceable> is specified it
                  is the exact value that will appear, otherwise the value