Revision 3.5 Update by Ed Stark. The new damage reduction rules explained. The list of indicator types that can be used are: Magic (magic weapons), Epic (weapons with a +6 or greater indicator), Alignment, Special material (silver, adamantine, cold iron -- each will have creation rules and costs), Nothing (affects all weapons). The article also describes how the monk's unarmed attacks reflect the new rules (Magic at level 4, Lawful at level 10, Adamantine at level 16), and mentions a new spell, align weapon. There won't be any spells to imbue weapons with a special material aura.