| Operation | Button | Shortcut key | Description |
|---|---|---|---|
| Backspace |  |
Backspace | delete to left |
| All Clear | AC | clear calculations screen | |
| Exp | E | e | 2E5 = 2×105 |
| Answer | Ans | previous calculation result | |
| Help |  |
Show this page | |
| Undo |  |
Ctrl+Z | undo last editing change |
| Redo |  |
Ctrl+Y | do again editing change |
| Left | move cursor to the left | ||
| Right | ➞ | move cursor to the right | |
| Select all | Ctrl+A | select expression | |
| Copy | Ctrl+C | copy expression | |
| Paste | Ctrl+V | paste expression |
