gBASIC. `help` for prompt commands, `quit` to leave.
> b{file}= "brain.json"
> exists(b)
true
> len(read(b))
325
> decode(read(b)).schema_version
1
> count(decode(read(b)).nodes)
5
> decode(read(b)).nodes[4].text
a newt
> quit
Your program was not saved; `recover` will bring it back next time.
