Sony PEG-S300 - Manual (Page 110)

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The Calculator menu commands
The Calculator Edit menu
Copy and Paste
These commands may be used to copy a number from the Calculator and
paste it into another application. Similarly, you can also paste numeric
values you copied from another application such as the Expense into the
Calculator.
The Options menus
Recent Calculations
You can review the last calculation you made. This command is useful
when you confirm a calculation you once made at a later time.
About Calculator
Shows the version information of the Calculator.