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In this section, we learn how RPN and algebraic-style calculations work, how to undo and redo an operation done by mistake, and how to control various modes of the Calculator.

• RPN Tutorial | Basic operations with the stack. | |

• Algebraic Tutorial | Algebraic entry; variables. | |

• Undo Tutorial | If you make a mistake: Undo and the trail. | |

• Modes Tutorial | Common mode-setting commands. |