To copy numbers from the tape and paste them into other applications or back to the calculator, use the mouse to highlight the number you want and select Copy from the Edit menu.
To paste a number from any source, use Paste on the Edit menu. The calculator will confirm that one number is in the paste buffer and transfer into the input register window.
To select multiple entries on the tape, click on an entry, hold down the shift key and click on another entry to select a range of entries. Hold down the control key and click on entries to select specific items on the tape.
The calculator will not accept more than one number at a time in the paste buffer, but you can transfer a whole calculation to another program.