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The cursor is shown as a left-facing key. The cursor indicates the current
edition location. For example, for the cursor in the location indicated above,
type now:
The edited expression looks as follows:
Suppose that you want to replace the quantity between parentheses in the
denominator (i.e., 5+1/3) with (5+π
2
/2). First, we use the delete key ( )
delete the current 1/3 expression, and then we replace that fraction with
π
2
/2, as follows:
When hit this point the screen looks as follows:
In order to insert the denominator 2 in the expression, we need to highlight
the entire π
2
expression. We do this by pressing the right arrow key ( )
once. At that point, we enter the following keystrokes: