The investment analysis adds new input at the bottom of
the tape and runs expressions from top to bottom. To delete an item
from the tape, hover the mouse pointer to the left of the variable
or constant name to delete. When you see the (x) icon, click it to
delete the line from the calculator.
To change the position of a line on the paper tape, move
the mouse pointer next to the result and click the up or down widgets.
The investment analysis uses the 10th percentile, the mode, and the
90th percentile of the last line on the calculator tape as the low,
likely, and high estimates for the model. To see all values, hover
the mouse pointer over the result value on the paper tape.
By default, if
the tape contains no errors, the calculator automatically recalculates
the simulation values and graphs the NPV results for up to 10,000
samples as you edit. To create a smoother NPV curve, select larger
sample sizes from the drop-down menu. To manually control the simulation,
select and clear Auto recalc or Graph
results. When parse errors occur or when the simulation
fails because of undefined variables, the calculator displays a red
"i" near the result field. You can get more details about an error
by hovering the mouse pointer over the “i.”