Sylladex

Captchalogue
Captchaloguing is when is item in Homestuck is basically put into John's inventory, called the Sylladex. We still have yet to learn what that means, as John was wondering himself. When an item is captchalogued, it is put onto a Captchalogue Card in the Sylladex. So far, John has four captchalogue cards, but it has been hinted that he may gain more as the story progresses. When an item is captchalogued and all of the captchalogue cards are full, the last item falls out of the Captchalogue Deck.