HP 33s hp 33s_user's manual_English_E_HDPM20PIE56.pdf - Page 21
Keys for Clearing, Description, Backspace., entire, number, Clear, Cancel - program
UPC - 082916001456
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Key b Keys for Clearing Description Backspace. Keyboard-entry mode: Erases the character immediately to the left of "_" (the digit-entry cursor) or backs out of the current menu. (Menus are described in "Using Menus" on page 1-7.) If the number is completed (no cursor), b clears the entire number. Equation-entry mode: Erases the character immediately to the left of "¾" (the equation-entry cursor). If a number entry in your equation is complete, b erases the entire number. If the number is not complete, b erases the character immediately to the left of "_" (the number-entry cursor). "_" changes back to "¾" when number entry is complete. b also clears error messages, and deletes the current program line during program entry. Clear or Cancel. Clears the displayed number to zero or cancels the current situation (such as a menu, a message, a prompt, a catalog, or Equation-entry or Program-entry mode). Getting Started 1-5