Start Retro in interactive mode:

```
retro -i
```

You should see something similar to this:

Retro 12 (2021.7) 8388608 MAX, TIB @ 1025, Heap @ 9374

At this point you are at the listener, which reads and processes your input. You are now set to begin exploring Retro.

Retro is normally silent; unlike other Forth systems, it does not display an "ok" prompt.

To exit, run bye:

```
bye
```