Excel Calculation Modes: Automatic vs. Manual

The first block of code sets the calculation mode of the Excel application to 'automatic'. This means that Excel will automatically recalculate formulas and update the values in the cells whenever any changes are made.

The second block of code sets the calculation mode of the Excel application to 'manual'. This means that Excel will only recalculate formulas and update the values in the cells when specifically requested by the user. This can be useful in situations where there are a large number of calculations and you want to control when they are performed in order to optimize performance.