Numeric controls and indicators accept only the following characters.
| Character(s) | Description |
|---|---|
| Hexadecimal digits | 0 through F |
| Octal digits | 0 through 7 |
| Binary digits | 0 and 1 |
| Decimal digits | 1, 1.0, 2, 3.5, and so on |
| . | Decimal point |
| + | Positive symbol |
| – | Negative symbol |
| E or e | For scientific or engineering notation format |
| Inf | Infinity |
| NaN | Not a number |
| / | For use in absolute time format, which changes based on the local settings for the computer |
| : | For use in absolute time format, which changes based on the local settings for the computer |
| AM, am, PM, pm | For use in absolute time format, which changes based on the local settings for the computer |
| SI prefixes | |
| y | yocto (10–24) |
| z | zepto (10–21) |
| a | atto (10–18) |
| f | femto (10–15) |
| p | pico (10–12) |
| n | nano (10–9) |
| u | micro (10–6) |
| m | milli (10–3) |
| c | centi (10–2) |
| d | deci (10–1) |
| da | deka (101) |
| h | hecto (102) |
| k | kilo (103) |
| M | mega (106) |
| G | giga (109) |
| T | tera (1012) |
| P | peta (1015) |
| E | exa (1018) |
| Z | zetta (1021) |
| Y | yotta (1024) |