-The group-execute permission character is given
-as
-.B s
-if the file has the set-group-id bit set;
-likewise the user-execute permission character is given
-as
-.B s
-if the file has the set-user-id bit set.
+The group-execute permission character is given as \fBs\fP if the file has
+the set-group-id bit set; likewise the user-execute permission character is
+given as \fBs\fP if the file has the set-user-id bit set. These are given
+as \fBS\fP (capitalized) if the corresponding execute permission is NOT
+set.