ISFORMULA function
Summary
Returns TRUE if there is a reference to a cell that contains a formula
Syntax
ISFORMULA(reference)
The ISFORMULA function syntax has the following arguments.
• Reference Required. Reference is a reference to the cell you want to test. Reference can be a cell reference, a formula, or a name that refers to a cell.
• Reference Required. Reference is a reference to the cell you want to test. Reference can be a cell reference, a formula, or a name that refers to a cell.
Example
=TODAY()