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		example value types
key	description of value	singly linked	singly linked + order	doubly linked	doubly linked + order	array	hash
first	pointer to first item in list	URI of proxy	URI of proxy	URI of proxy	URI of proxy	URI of proxy	URI of proxy
last	pointer to last item in list	X	X	URI of proxy	URI of proxy	URI of proxy	URI of proxy
count	count of all items in list	X	X	X	X	X	X
first_loaded	pointer to first item in loaded range of items	item	item	item	item	array[0]	URI of proxy
last_loaded	pointer to last item in loaded range of items	X	X	item	itemN	array[size of array]	URI of proxy
count_loaded	count of items in currently loaded range	X	X	X	=position of last - position of first	size of array	size of hash
resume_token	pointer to item after last_loaded	URI of proxy	URI of proxy	URI of proxy	URI of proxy	URI of proxy	URI of proxy
loaded_items	pointer to loaded items	use first_loaded	use first_loaded	use first_loaded	use first_loaded	array	hash

		example value types
key	description of value	singly linked	singly linked + order	doubly linked	doubly linked + order	array	hash	Comments
uri	URI of proxy for this item	URI of proxy	URI of proxy	URI of proxy	URI of proxy	URI of proxy	URI of proxy	This is the hash key for loaded_items when the list is implemented as a hash.
prev	pointer to previous item in list	X	X	URI of proxy	URI of proxy	= p - 1	URI of proxy
next	pointer to next item in list	URI of proxy	URI of proxy	URI of proxy	URI of proxy	= p + 1	URI of proxy
prev_loaded	pointer to previous item in loaded range of items	X	X	URI of proxy	prev item	prev itemURI of proxy	= pl - 1	URI of proxy
next_loaded	pointer to next item in loaded range of items	URI of proxy	URI of proxy	URI of proxy	next item	next item	next item	next itemURI of proxy	= pl + 1	URI of proxy
proxyFor	URI of list item being aggregated	URI	URI	URI	URI	URI	URI
proxyIn	URI of list aggregation	URI of aggregation	URI of aggregation	URI of aggregation	URI of aggregation	URI of aggregation	URI of aggregation
proxyIn_loaded	pointer to List Header	header	header	header	header	header	header
position (p)	position in full list	X	p	X	p	p	X
position_loaded (pl)	position in loaded range of items	X	pl	X	pl	pl	X

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