typo 'plain'->'better'?

I'm not sure, but it would make sense if 'plain' is replaced with 'better'.
As it is, I am wondering if listing properties in the 'attributes' attribute results in them being automatically created, but I am left wondering what 'plain' is all about.
Merge pull request #555 from davidmaxwaterman/patch-2

typo 'plain'->'better'?