Sharp Zaurus ZR-5700 Operation Manual page 297

5. Touch Insert to add the selected function and
its argument place holder to the formula in
the edit bar.
Functions that require a specific type of
argument include a place holder to remind
you what argument to add. (See "Syntax of
funcitons," for details about arguments.) The
place holder is highlighted so all you need to
do is type the argument or touch a cell to
enter the cell reference.
6. Enter the function argument, if necessary.
For example, if you want to compute the
statistical average of a set of data in your
worksheet, use the AVERAGE function.
AVERAGE requires a set of numbers as its
argument. When you select AVERAGE,
AVERAGE (values...) appears in the edit bar
and values... is highlighted. Highlighted
characters in edit bar are replaced when you
type or when you touch a cell or range in the
worksheet.
Press PREV or NEXT to move the highlight-
ing to the next argument place holder in the
formula. In effect, NEXT serves as a tab key,
permitting you to move through a formula
entering argumets.
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7. To signal that you are finished entering the
formula, select a new cell (or press ENTER).