4User-Defined Functions
IN THIS CHAPTER
Creating User-Defined Functions
Excel provides many built-in formulas, but there are times when you need a complex custom formula not offered—for example, a formula that sums a range of cells based on their interior color.
So, what do you do? You could go down your list and copy the colored cells to another section. Or, perhaps you have a calculator next to you as you work your way down your list—beware you don't enter the same number twice! Both methods are time consuming and open to accidents. What to do? You could write a procedure—after all, that's what this ...
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