.RB "[\|" \-n | \-\-numeric\-sort "\|]"
.RB "[\|" \-p | \-\-no\-sort "\|]"
.RB "[\|" \-r | \-\-reverse\-sort "\|]"
+.RB "[\|" \-\-size\-sort "\|]"
.RB "[\|" \-u | \-\-undefined\-only "\|]"
.RB "[\|" \-\-help "\|]"
.RB "[\|" \-\-version "\|]"
Reverse the sense of the sort (whether numeric or alphabetic); let the
last come first.
+.TP
+.B \-\-size\-sort
+Sort symbols by size. The size is computed as the difference between
+the value of the symbol and the value of the symbol with the next higher
+value. The size of the symbol is printed, rather than the value.
+
.TP
.B "\-t \fIradix"
.TP