[COMMITTED] algol68: note that module postludes can only contain units

[Jose E. Marchesi]

According to the syntax:

f) NEST3 module postlude{d} :
     postlude{94d} token, strong void NEST3 series with EMPTY{32b}.
---
 gcc/algol68/ga68.texi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/algol68/ga68.texi b/gcc/algol68/ga68.texi
index a332eff0f75..b9d0a6b25a4 100644
--- a/gcc/algol68/ga68.texi
+++ b/gcc/algol68/ga68.texi
@@ -440,8 +440,8 @@ it would be @code{fd} as well.
 
 The @dfn{postlude} of the module is optional and spans from
 @code{@B{postlude}} to @code{@B{fed}}.  It consists on a serial clause
-in a @code{@B{void}} strong context, where labels and completers are
-not allowed. XXX but the syntax seems to imply they are??
+in a @code{@B{void}} strong context, where definitions, labels and
+module accesses are not allowed, just units.
 
 @node Accessing modules
 @subsection Accessing modules
-- 
2.30.2