Are there any other options for DOM besides "lftipr"?

I found the dom explanation page and it did answer questions I had about that feature from seeing it in code samples. I've played around with the variations, taking out a letter at a time to see what would happen to the rendered table.

It's been a few weeks back, so I don't remember where it came from, but I remember seeing this in a code sample. Was the option B a typo or is it a legitimate flag for a feature? By taking the letter out, I don't see any visible change in the resulting table. I can't find it in the "dom" page either.

$(".display").DataTable({
    dom: 'Blftipr',
    // ... code