| Keyword | Description | Symbol / Usage |
| decimal | Set number of digits after decimal point | DECIMAL intDigit |
| digit | Set number of significant digits | DIGIT intDigit |
| focus | Environment parameter arg1, set focus for similar quantities | FOCUS |
| format | Set number of digits after decimal point | FORMAT 'fmt' |
| invert | Environment parameter arg1, invert expression mode | INVERT |
| negexp | Environment parameter arg1, negative dimension mode | NEGEXP |
| off | Environment option arg2, set off | OFF |
| on | Environment option arg2, set on | ON |
| reclaim | Reclaim all memory positions | RECLAIM |
| set | Set environment parameters | SET arg1 arg2 |
| show | Show environment parameters | SHOW arg1 |