+=item C<escape_js $text>
+
+Returns a JavaScript-escaped version of C<$text>. Instead of a string
+an instance of the thin proxy-object L<SL::Presenter::EscapedText> is
+returned.
+
+It is safe to call C<escape> on an instance of
+L<SL::Presenter::EscapedText>. This is a no-op (the same instance will
+be returned).
+