-.B s
-if the entry is a socket, or
-.br
-.ns
-.TP 3
-.B \-
-if the entry is a plain file.
-.PP
-The next 9 characters are interpreted
-as three sets of three bits each.
-The first set refers to owner permissions;
-the next to permissions to others in the same user-group;
-and the last to all others.
-Within each set the three characters indicate
-permission respectively to read, to write, or to
-execute the file as a program.
-For a directory, `execute' permission is interpreted
-to mean permission to search the directory.
-The permissions are indicated as follows:
-.TP 3
-.B r
-if the file is readable;
-.br
-.ns
-.TP 3
-.B w
-if the file is writable;
-.br
-.ns
-.TP 3
-.B x
-if the file is executable;
-.br
-.ns
-.TP 3
-.B \-
-if the indicated permission is not granted.
+.B \-R
+recursively list subdirectories encountered.
+.TP
+.B \-r
+Reverse the order of sort to get reverse alphabetic
+or oldest first as appropriate.
+.TP
+.B \-s
+Display the sizes of files and directories in 512-byte blocks.
+.TP
+.B \-T
+Display complete time information for the file, including
+month, day, hour, minute, second, and year.
+.TP
+.B \-t
+Sort by time modified (latest first) instead of
+by name.
+.TP
+.B \-u
+Use time of last access instead of last
+modification for sorting
+(with the \fB\-t\fP option)
+and/or printing (with the \fB\-l\fP option).