diff --git a/manual/cmds/ocamldoc.etex b/manual/cmds/ocamldoc.etex
index 563c6df..55e119b 100644
--- a/manual/cmds/ocamldoc.etex
+++ b/manual/cmds/ocamldoc.etex
@@ -753,7 +753,9 @@ text: {{text-element}}
 @||@&@ '{[' string ']}' @ & set the given @string@ in preformatted
 				source code style.\\
 @||@&@ '{v' string 'v}' @ & set the given @string@ in verbatim style. \\
-@||@&@ '{%' string '%}' @ & take the given @string@ as raw \LaTeX\ code.\\
+@||@&@ '{%' string '%}' @ & target-specific content
+       (\LaTeX\ code by default, see details
+        in \ref{sss:target-specific-syntax}) \\
 @||@&@ '{!' string '}' @ & insert a cross-reference to an element
        (see below \ref{sss:crossref} for the syntax of cross-references).\\
 @||@&@ '{!modules:' string string ... '}' @ & insert an index table
@@ -830,6 +832,15 @@ names. For example, the constructor "Node" of the type "tree" will be
 referenced as "{!tree.Node}" or "{!const:tree.Node}", or possibly
 "{!Mod1.Mod2.tree.Node}" from outside the module.

+\subsubsection*{Target-specific formatting}
+\label{sss:target-specific-syntax}
+
+The content inside "{%foo: ... %}" is target-specific and will only be
+interpreted by the backend "foo", and ignored by the others. The
+backends of the distribution are "latex", "html", "texi" and "man". If
+no target is specified (syntax "{% ... %}"), "latex" is chosen by
+default. Custom generators may support their own target prefix.
+
 \subsubsection*{First sentence}

 In the description of a value, type, exception, module, module type, class