Great description for `.ix`. With this, the functionality of the indexers is clear. One small comment: with regards to terminology describing the location / position along indices, do you think it would be better to be more terse, so that we only use one word to refer to this (i.e, *location*), or unique words for describing *position* of labels and *location* of integers? To me, as an advanced data structure, the `DataFrame` (or pandas data structures in general) changes some core assumptions one might have about fundamental behavior of any array-like structure, due to the amazing functionality via its indexing methods. Semantically, the words *position* and *location* are quite similar, however, do have subtle distinctions (i.e., location tends to be *fixed* while position has a more relative connotation). It could be of benefit to use this distinction in developing a concise system metaphor, so we are all on the same band wagon when referring to these behaviors. Just a thought. :)