section

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                 +-,items-+

Returns a new collection (of the same class as the receiver) containing selected items from the receiver. The first item in the new collection is the item corresponding to index [start] in the receiver. Subsequent items in the new collection correspond to those in the receiver, in the same sequence. If you specify the whole number [items] , the new collection contains only this number of items (or the number of subsequent items in the receiver, if this is less than [items] ). If you do not specify [items] , the new collection contains all subsequent items of the receiver. The receiver remains unchanged.