items for filters> items {flags} (closure)
closure: the closure to run| input | output | 
|---|---|
| record | any | 
Iterate over each key-value pair of a record
> { new:york, san:francisco } |items {|key, value| echo$'($key) ($value)' }
╭───┬───────────────╮
│0│newyork│
│1│sanfrancisco│
╰───┴───────────────╯
This is a the fusion of columns, values and each.
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    https://www.nushell.sh/commands/docs/items.html