(Customization Types): Add a reference to the Widget manual.

diff --git a/lispref/customize.texi b/lispref/customize.texi
index da202b83142285db76aedfc663123237b229c07b..97d26c733df4729d77b2d1a0f5f02fd405ebe589 100644 (file)
--- a/lispref/customize.texi
+++ b/lispref/customize.texi
@@ -368,6 +368,9 @@ equivalent to @code{(string)}.
 * Type Keywords::
 @end menu
 
+All customization types are implemented as widgets; see @ref{Top, ,
+Introduction, widget, The Emacs Widget Library} for details.
+
 @node Simple Types
 @subsection Simple Types