[PATCH] sort manpage: fix key definition

---
 sort.1 | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)
diff --git a/sort.1 b/sort.1
index d32b85d..30a462a 100644
--- a/sort.1
+++ b/sort.1
_AT_@ -30,17 +30,18 @@ indicating the location of the disorder.
 .It Fl k Ar key
 specifies a key definition of the form
 .Sm off
-[.
+.Sy S
+.No [.
 .Sy s
-][
+.No ][
 .Sy f
-][,
+.No ][,
 .Sy E
-[.
+.No [.
 .Sy e
-][
+.No ][
 .Sy f
-]]
+.No ]]
 .Sm on
 where
 .Sm off
_AT_@ -59,15 +60,15 @@ refers to the first character of the specified starting column,
 .Sy E
 refers to the last column of every line, and
 .Sy e
-refers to the last character of that last column.
+refers to the last character of the ending column.
 .Sy f
 can be used to specify options
 .Sm off
-(
+.No (
 .Sy n
 ,
 .Sy b
-)
+.No )
 .Sm on
 that only apply to this key definition.
 .Sy b
-- 
1.9.1
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