DUPN Duplicates all items between (and including) the highlighted item and the item on stack level 1. If, for example, you have selected the item on stack level 3, selecting DUPN duplicates it and the two items below it, places them on stack levels 1 to 3, and moves the items that were duplicated up to stack levels 4 to 6.

Echo Places a copy of the selected result on the entry line and leaves the source result highlighted.

LIST Creates a list of results, with the highlighted result the first element in the list and the item on stack level 1 the last.

Show an item

Delete an item

Delete all items

Before

After

To show a result in full-screen textbook format, tap .

Tap to return to the history.

To delete an item from the stack:

1.Select it. You can do this by pressing =or \until the item is highlighted, or by tapping on it.

2.Press C.

To delete all items, thereby clearing the history, press SJ.

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Reverse Polish Notation (RPN)

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HP Prime Graphing NW280AAABA manual Show an item Delete an item Delete all items