415.3.

Aura spells are always targeted. An Aura's target is specified by its enchant keyword ability (see rule 502.45, "Enchant"). An Aura permanent doesn't target anything; only the spell is targeted. An activated or triggered ability of an Aura permanent can be targeted. Neither Equipment spells nor Equipment permanents target anything. The equip ability is targeted; see rule 502.33, "Equip." An activated or triggered ability of an Equipment permanent can be targeted. Neither Fortification spells nor Fortification permanents target anything. The fortify ability is targeted; see rule 502.65, "Fortify." An activated or triggered ability of a Fortification permanent can be targeted.