HP F2226A - 48GII Graphic Calculator User Manual page 75

And will use the editing features of the Equation Editor to transform it into the
following expression:
In the previous exercises we used the arrow keys to highlight sub-expressions
for evaluation. In this case, we will use them to trigger a special editing cursor.
After you have finished entering the original expression, the typing cursor (a
left-pointing arrow) will be located to the right of the 3 in the denominator of
the second fraction as shown here:
Press the down arrow key (˜) to trigger the clear editing cursor. The screen
now looks like this:
By using the left arrow key (š) you can move the cursor in the general left
direction, but stopping at each individual component of the expression. For
example, suppose that we will first will transform the expression π 2
/2 into the
5
expression LN(π /3) . With the clear cursor active, as shown above, press
the left-arrow key (š) twice to highlight the 2 in the denominator of π 2
/2.
Next, press the delete key (ƒ) once to change the cursor into the insertion
cursor. Press ƒ once more to delete the 2, and then 3 to enter a 3. At
this point, the screen looks as follows:
Page 2-17