Revise the __all__ index entry a touch.

diff --git a/Doc/ref/ref6.tex b/Doc/ref/ref6.tex
index e6b3246e25c5d62103f7fe0986c76db7b96cb440..9c088e912e83296fe49ad98d0fc3d888a9e4bc1c 100644 (file)
--- a/Doc/ref/ref6.tex
+++ b/Doc/ref/ref6.tex
@@ -703,7 +703,7 @@ considered public and are required to exist.  If \code{__all__} is not
 defined, the set of public names includes all names found in the
 module's namespace which do not begin with an underscore character
 (\character{_}).
-\index{__all__}
+\withsubitem{(optional module attribute)}{\ttindex{__all__}}
 
 The \keyword{from} form with \samp{*} may only occur in a module
 scope.  If the wild card form of import --- \samp{import *} --- is