[. . . ] By adding the environmental sustainability to its company mission, Olivetti shows its commitment to designing, producing and marketing products that take into consideration low energy consumption, recycling of materials and health safeguards, in conformance with current norms. Has low energy consumption, thanks to automatic switch-off of the display after 3 minutes of inactivity, allowing significant energy savings. [. . . ] Square root key Calculates the square root of the contents of the display. Tax plus key Calculates an amount including VAT with Tax rate preset by [RATE] key. Tax minus key Calculates an amount excluding VAT with Tax rate preset by [RATE] key. Percentage key Completes percent calculation when [x] or [÷ ] key is used. Cost key Used to enter Cost factor in a Cross Profit Margin calculation. Sell key Used to enter Selling price in a Cross Profit Margin calculation. Margin key Used to enter desired Margin in a Cross Profit Margin calculation. Delta percent key Automatically compares any two amounts and then calculates and prints the percent change. Division key To divide, enter the number to be divided (dividend) and press the [÷ ] key; then enter the second number (divisor) and press [=] key to obtain result. Multiplication key To multiply, enter the first number (multiplicand) and press the [x] key; then enter the second number (multiplier) and press [=] key to obtain result. Pressed twice, clears the accumulator or the calculation status except for Memory and Grand Total. Decimal point key If the decimal point key is used more than once in a numeral, the first decimal point will be considered as effective. [. . . ] TO DISPOSE OF OUR DEVICES CORRECTLY: a) b) Contact the Local Authorities, who will give you the practical information you need and the instructions for handling the waste correctly, for example: location and times of the waste collection centres, etc. When you purchase a new device of ours, give a used device similar to the one purchased to our dealer for disposal. [. . . ]