Casio fx 991MS User Guide - Page 11

k Making Corrections During Input • Use e and r to move the cursor to the location you want. • Press [ to delete the number or function at the current cursor position. • Press A K to change to an insert cursor t. Inputting something while the insert cursor is on the display inserts the input at the insert cursor position. • Pressing A K, or = returns to the normal cursor from the insert cursor. k Replay Function • Every time you perform a calculation, the replay function stores the calculation formula and its result in replay memory. Pressing the [ key displays the formula and result of the calculation you last performed. Pressing [ again back steps sequentially (new-to-old) through past calculations. • Pressing the e or r key while a replay memory calculation is on the display changes to the editing screen. • Pressing the e or r key immediately after you finish a calculation displays the editing screen for that calculation. • Pressing t does not clear replay memory, so you can recall the last calculation even after you press t. • Replay memory capacity is 128 bytes for storage of both expressions and results. • Replay memory is cleared by any of the following actions. When you press the 5 key When you initialize modes and settings by pressing A B 2 (or 3) =. When you change from one calculation mode to another When you turn off the calculator. k Error Locator • Pressing r or e after an error occurs displays the calculation with the cursor positioned at the location where the error occurred. 9