The acronym “CSE” stands for “Control + Shift + Enter”.

A CSE formula in Excel is an array formula that must be entered with control + shift + enter.

The curly braces are a clear indication that the formula was entered with CSE.

If the same formula is enteredwithoutCSE, the result is incorrect.

Not all array formulas require CSE

Not all array formulas need to be entered with CSE.