--- a/gcc/doc/gty.texi	Sun Feb 07 18:28:00 2010 +0900
+++ b/gcc/doc/gty.texi	Fri Feb 12 23:39:51 2010 +0900
@@ -46,12 +46,12 @@
 Here are some examples of marking simple data structures and globals.
 
 @smallexample
-struct @var{tag} GTY(())
+struct GTY(()) @var{tag}
 @{
   @var{fields}@dots{}
 @};
 
-typedef struct @var{tag} GTY(())
+typedef struct GTY(()) @var{tag}
 @{
   @var{fields}@dots{}
 @} *@var{typename};
@@ -136,7 +136,7 @@
 the length of an array.  The first case is when a structure ends in a
 variable-length array, like this:
 @smallexample
-struct rtvec_def GTY(()) @{
+struct GTY(()) rtvec_def @{
   int num_elem;         /* @r{number of elements} */
   rtx GTY ((length ("%h.num_elem"))) elem[1];
 @};
@@ -194,7 +194,7 @@
 
 For example,
 @smallexample
-struct tree_binding GTY(())
+struct GTY(()) tree_binding
 @{
   struct tree_common common;
   union tree_binding_u @{
@@ -450,6 +450,13 @@
 somewhere.  It will be called @file{gtype-@var{lang}.h}, where
 @var{lang} is the name of the subdirectory the language is contained in.
 
+Plugins can add additional root tables.  Run the @code{gengtype}
+utility in plugin mode as @code{gengtype -P pluginout.h @var{source-dir}
+@var{file-list} @var{plugin*.c}} with your plugin files
+@var{plugin*.c} using @code{GTY} to generate the @var{pluginout.h} file.
+The GCC build tree is needed to be present in that mode.
+
+
 @node Invoking the garbage collector
 @section How to invoke the garbage collector
 @cindex garbage collector, invocation