How to use option vertical?

I was looking for a way to create a vertical line and found the PR #260 .
Now I was wondering how I would enable this for my progressbar line.

Do I only have to add the following line to the options on initiating the progressbar?
```js
{
//...
vertical: true,
//...
```

Start by reading PR #260 and the progressbar initialization options to verify how the vertical option is exposed. Clarify the supported usage in the project documentation, including whether the shown option belongs in the progressbar configuration, and ensure the resulting guidance answers the question directly.

Written by the indexing model from the issue text.