+=item B<-e> EXPR
+
+=item B<--expr> EXPR
+
+Instead of launching the external editor, non-interactively
+apply the Perl expression C<EXPR> to each line in the file.
+See L</NON-INTERACTIVE EDITING> below.
+
+Be careful to properly quote the expression to prevent it from
+being altered by the shell.
+
+Note that this option is only available when Perl 5 is installed.
+