How to make an inventory?

[alikim]

As far as I understand there is CharacterFrame that works as inventory and then there is InspectFrame that also works that way. They use inventory functions like GetInventoryItemLink("unit", slot) or GetInventorySlotInfo("slotName") that work with both frames, so how these inventory functions know which frame to work with?

How do I make my own frame that will count as inventory and I could call these functions on my own buttons and slots? Do I have to inherit a certain template? Or register some frame/button as a slot?

Thank you!