**To enter a formula into a custom field formatted as a formula:**

- Formulas can contain the following math operators: * / + - ( )
- To reference an Other Information field in your formula, surround it with square brackets. Example of a tax calculation: [Amount] * 0.15
- Additional functions are:
- SQRT(expression): Calculates square root of expression
- POWER(expression, y): Raises expression to the power of y
- ROUND(expression, x): Rounds expression to x digits after decimal
- ABS(expression): Calculates absolute value of expression
- Note: expression denotes either a value, a reference to a field or any calculation on such
- Formula Example: ( [Amount] - ( [Amount] * [Discount] ) ) * 1.15
- The above formula makes a Total calculation by applying a discount contained in another field and adds taxes of 15%.

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