doc: Document default scope in LDAP URL

diff --git a/doc/src/sgml/client-auth.sgml b/doc/src/sgml/client-auth.sgml
index 405bf268327b819b8434f54c29bacfc70506016d..26c3d1242ba17e5cfb48925a3111206325a14a86 100644 (file)
--- a/doc/src/sgml/client-auth.sgml
+++ b/doc/src/sgml/client-auth.sgml
@@ -1529,7 +1529,8 @@ ldap://host[:port]/
 
          scope must be one
          of base, one, sub,
-         typically the last.  attribute can
+         typically the last.  (The default is base, which
+         is normally not useful in this application.)  attribute can
          nominate a single attribute, in which case it is used as a value for
          ldapsearchattribute.  If
          attribute is empty then