Index: boost/bind/placeholders.hpp
===================================================================
RCS file: /cvsroot/boost/boost/boost/bind/placeholders.hpp,v
retrieving revision 1.14
diff -d -u -r1.14 placeholders.hpp
--- boost/bind/placeholders.hpp	6 Oct 2005 19:03:19 -0000	1.14
+++ boost/bind/placeholders.hpp	26 Apr 2007 22:36:47 -0000
@@ -25,7 +25,7 @@
 namespace
 {
 
-#if defined(__BORLANDC__) || defined(__GNUC__)
+#if defined(BOOST_BIND_ENABLE_INLINE_PLACEHOLDERS)
 
 static inline boost::arg<1> _1() { return boost::arg<1>(); }
 static inline boost::arg<2> _2() { return boost::arg<2>(); }
Index: libs/bind/bind.html
===================================================================
RCS file: /cvsroot/boost/boost/libs/bind/bind.html,v
retrieving revision 1.36
diff -d -u -r1.36 bind.html
--- libs/bind/bind.html	9 Nov 2006 19:29:41 -0000	1.36
+++ libs/bind/bind.html	26 Apr 2007 22:37:22 -0000
@@ -76,7 +76,7 @@
 		<h3 style="MARGIN-LEFT: 20pt"><A href="#Implementation">Implementation</A></h3>
 		<h4 style="MARGIN-LEFT: 40pt"><A href="#Files">Files</A></h4>
 		<h4 style="MARGIN-LEFT: 40pt"><A href="#Dependencies">Dependencies</A></h4>
-		<h4 style="MARGIN-LEFT: 40pt"><A href="#NumberOfArguments">Number of Arguments</A></h4>
+		<h4 style="MARGIN-LEFT: 40pt"><A href="#Arguments">Arguments</A></h4>
 		<h4 style="MARGIN-LEFT: 40pt"><A href="#stdcall">"__stdcall", "__cdecl", "__fastcall", 
 				and "pascal" Support</A></h4>
 		<h4 style="MARGIN-LEFT: 40pt"><A href="#visit_each"><b>visit_each</b> support</A></h4>
@@ -818,9 +818,21 @@
 			<li>
 				<A href="../../boost/type.hpp">boost/type.hpp</A></li>
 		</ul>
-		<h3><a name="NumberOfArguments">Number of Arguments</a></h3>
+		<h3><a name="Arguments">Arguments</a></h3>
 		<p>This implementation supports function objects with up to nine arguments. This is 
 			an implementation detail, not an inherent limitation of the design.</p>
+                <p>The placeholder arguments, <b>_1</b> ... <b>_9</b>, are implemented as objects
+                        with internal linkage by default. Some compilers support an inline
+                        placeholder implementation, which avoids defining data in a header file at
+                        the cost of not supporting the TR1 (3.6.4) CopyConstructible requirement.
+                        To enable inline placeholders define the macro 
+                        <b>BOOST_BIND_ENABLE_INLINE_PLACEHOLDERS</b> before including
+                        &lt;boost/bind.hpp&gt;. Note that inline placeholders may be necessary on
+                        some compilers when using non-standard features such as precompiled headers.
+                        If you are not using placeholders at all, you can disable them entirely by
+                        defining the macro <b>BOOST_BIND_NO_PLACEHOLDERS</b>. Note that defining
+                        the placeholder macros makes bind less compliant with the TR1 specification
+                        and may cause compatibility problems.</p>
 		<h3><a name="stdcall">"__stdcall", "__cdecl", "__fastcall", and "pascal" Support</a></h3>
 		<p>Some platforms allow several types of (member) functions that differ by their <b>calling 
 				convention</b> (the rules by which the function is invoked: how are