-/** Reversion of the Clifford algebra, coincides with the conjugate(). */
-inline ex clifford_star(const ex & e) { return e.conjugate(); }
+/** Reversion of the Clifford algebra, reverse the order of all clifford units
+ * in ncmul. */
+inline ex clifford_star(const ex & e) { return clifford_star_bar(e, false, 0); }