| Command | Description |
|---|---|
| SERIN | Reads communication bytes into a variable or a series or variables |
| SEROUT | Transmits a variable or constant, or series of variables and constants |
| Command | Description |
|---|---|
| IF.... THEN | Test an input and jump to label |
| GOTO | Jump to address label |
| END | End the main program |
Conventions: labels at the beginning of lines are followed by a colon ( : ).