Changes

This property lists the [[ATK]] power of a card. Note that this is for a [[:Category:TCG|TCG]] or [[:Category:OCG|OCG]] card, and not for [[:Category:DDM|DDM]] monsters which use the [[Property:Attack|Attack]] property. Currently this is a [[has type::string]] because we need to allow the values [[X000]], [[?]], and [[∞]] but those values are not allowed when we try to use the [[Type:Number|number type]].