Casio fx-570ES User Manual page 15

Deleting a Character or Function
Example: To correct the expression 369 × × 12 so it becomes
369 × 12
LINE
Insert Mode:
Overwrite Mode:
Correcting a Calculation
Example: To correct cos(60) so it becomes sin(60)
LINE
Insert Mode:
Overwrite Mode:
Inserting Input into a Calculation
Always use the insert mode for this operation. Use d or e to
move the cursor to the location where you want to insert new input,
and then input what you want.
369**12
369**12
c60)
dddY
c60)
dddd
dd
Y
ddd
Y
s
s
E-13