Boolean - True if all non-ignored slots in the set are equipped, False otherwise.
numItems
Number - Number of items included in the set.
equippedItems
Number - Number of items in the set currently equipped.
availableItems
Number - Number of items in the set currently in the player's bags/bank, if bank is available.
missingItems
Number - Number of items in the set that are not currently available to the player.
ignoredSlots
Number - Number of inventory slots ignored by the set.
Details[]
The 'setIndex' return value is set when the equipment set is created and doesn't change as other sets are added or deleted. it appears to be the index of a slot in the internal storage used to hold the equipment set information.