IBM 3270 Manual page 149

This line should still be at the bottom of your
screen:
I
WSCTRL COpy
2. Press the Target key (PF14).
This message appears:
Position cursor and use CrSel to define the first corner.
WSCTRL COPY TARGT
3. Use the Cursor keys to move the cursor to the
spot where you want the upper left corner of
the copy to be placed.
For example, let's place the copy 2 lines down
and 4 spaces to the right of the original. The
cursor would be here:
Twinkle, twinkle, little star -
How I wonder what you are.
High above the sky so bright,
-wish I could remember the last line.
10-6 Book 3 - Using the Control Program