Hmm, I totally understand that. I'll mess around with your explanation until I fully understand. I also have alot of properties for items and weapons in my game; with weight always being a factor, so this layout really works out well for my game.
Thank you very much for taking the time to help me understand this.

Yea, it's not that hard. I can help you with most everything that I have implemented so far. Mine have tons of properties too and I am constantly adding more.

Ok great. I'll be working on it today, so I'm sure I'll have some questions for you.

Drac, what do you use synergy_id and synergy_usecode for? What do they do?

That is only half-implemented in that older script, you can delete references to that. In the script that is used for combining or using items on other items, such as dragging a spell scroll and dropping it on a spellbook to add the spell. The synergy_id is the id of the item type that the cursor item reacts with, synergy_usecode is the value of the action that takes place. For example, the synergy_id of the spell scroll matches the spellbook's id (the spellbook doesn't react when dragged and dropped on the scroll, however, so the spellbook's synergy_id is 0); the synergy_usecode is used in another lookup function, it looks up a block of code that unlocks the spell in the spellbook and then destroys the scroll.

Ahh very cool.
Kind of like what Everquest did.
Another question Drac.
Why is slot_owner and slot_origin set to -99 for both tome and milling bowl?

Sorry that this took so long. -99 means nothing... slot_origin is used to snap the item back to its original slot (that it was dragged from) when you try to drop it somewhere invalid, it is not updated during the dragging process, only when the item is successfully placed somewhere. -99 is just something that I put there to remind myself that its value is updated during game play; there will never be an item with an actual -99 value in it, look at the function that adds an item to the inventory, it updates slot_origin right away.

Thanks for your help Drac, I'm really having a easy time with this inventory.