This is a suggestion to make it simpler to change the color/formatting of
fonts and cells, in essence, an extension of Conditional Formatting. In
Finance, and no doubt other industries, it is useful to determine whether a
cell has a formula (not a specific formula, but whether any formula of any
type is present) or if it is merely a number or name. The function would be
for Excel to apply cell formatting purely based on the existence, or lack
thereof, of any formula.

For example:
A1: 350,000
A2: = A1/10
A3: = A2*6

Using the function, you could apply formatting to A2 and A3 without
specifying the exact formula that exists, but rather, that a formula is
present. Similarly, A1 could also have formatting applied since it contains
no formula.

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http://www.microsoft.com/office/comm...et.f unctions