## Advanced Formula Environment

Writing Excel formulas with the help of Name Manager can be a demanding job. When you write simple formulas, you will still somehow manage. With complex formulas or changing existing ones, there is a high chance that you will make a mistake. The LAMBDA feature allows you to create your own functions as names added in the Name Manager, and to make this job easier, Microsoft has created an Excel add-in for creating complex formulas: Advanced Formula Environment.