The display format for a column.
Format on the Format page in the Properties view.
A string specifying the display format.
The following statement, when applied to the Format property
of the Salary column, causes the column to display the word Overpaid for
any salary greater than $60,000 and Underpaid for
any salary under $60,000:
If(salary>60000, 'Overpaid', 'Underpaid')