Illustrative hierarchy. Rows and boxes are visited in order; values are not evaluated.
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Inventory
Structured data diagram with 17 values in 9 containers. Rows show members in source order and arrays show positions; connectors join nested containers.
Inventory
warehouse
{…}
items
[…]
reserved
{}
locations
[…]
[0]
{…}
[1]
{…}
sku
A
stock
3
tags
[…]
[0]
fragile
[1]
gift
sku
B
stock
0
tags
[]
[]
{}
[0]
north
[1]
south