In the documentation of the command line options of the "vent" module, the option "--prompt" is missing:
    
Current text:
> [...]
> 
> The command, if run with -h, will show the available options:
> 
> usage: venv [-h] [--system-site-packages] [--symlinks | --copies] [--clear]
>              [--upgrade] [--without-pip]
>              ENV_DIR [ENV_DIR ...]
> 
> [...]

The prompt option is also missing in the rest of the example output

output of python3 -m venv -h:
> python3 -m venv -h
> usage: venv [-h] [--system-site-packages] [--symlinks | --copies] [--clear]
>             [--upgrade] [--without-pip] [--prompt PROMPT]
>             ENV_DIR [ENV_DIR ...]
> [...]