diff --git a/reference/mssql/reference.xml b/reference/mssql/reference.xml
index 72f65003cd..8ef43a3273 100644
--- a/reference/mssql/reference.xml
+++ b/reference/mssql/reference.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.8 $ -->
+<!-- $Revision: 1.9 $ -->
  <reference id="ref.mssql">
   <title>Microsoft SQL Server functions</title>
   <titleabbrev>MS SQL Server</titleabbrev>
@@ -36,6 +36,16 @@
      are available at the FreeTDS home page: 
      <ulink url="&url.freetds;">&url.freetds;</ulink>
     </para>
+    <note>
+     <para>
+      In Windows, the DBLIB from Microsoft is used.  Functions that return a
+      column name are based on the <literal>dbcolname()</literal> function 
+      in DBLIB.  DBLIB was developed for SQL Server 6.x where the max
+      identifier length is 30.  For this reason, the maximum column length 
+      is 30 characters.  On platforms where FreeTDS is used (Linux), this is
+      not a problem.
+     </para>
+    </note>
    </section>
 
    &reference.mssql.configure;