Hey @jreback, unless I am misunderstanding some of the terminology, I think you mean *label based* index here. Also, I think it helps to be a bit more explicit (being that the use of an integer as a label is subtle, yet oh so important, distinction). Something like:
`(note that ``5`` when used as a *label* of a label based index. This use is **not** an integer position along index).`
Let me know what you think about that.