--- look.1	2001-05-20 19:57:53.000000000 +0000
+++ look-pb.1	2005-01-07 09:06:09.000000000 +0000
@@ -72,9 +72,9 @@
 .Bl -tag -width Ds
 .It Fl d
 Dictionary character set and order, i.e. only alphanumeric characters
-are compared.
+are compared. (On by default if no file specified).
 .It Fl f
-Ignore the case of alphabetic characters.
+Ignore the case of alphabetic characters. (On by default if no file specified).
 .It Fl a
 Use the alternate dictionary
 .Pa /usr/share/dict/web2