CEMB USA N300 - Manual (Page 18)

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General overview
Note:
Before deleting data from the records, the symbol asks the operator to
confirm the operation, which will result in the data being deleted definitively. Press
the key to confirm; with , the data will not be deleted.
Note:
The and keys, which respectively increase and decrease the position
selected by 3, can be used to scroll through the records quickly.