Thanks for the interesting question. The Formats document was created by actual human beings and is therefore, not a perfect work. However, it is what we have. It is also a constant work in progress and possibly that situation might be addressed, along with many others, in the upcoming update. The question is about placement of the pronunciation key when pronunciation are present throughout the volume. In that case, the key still needs to be in the front matter of the volumes. That material still needs to be easily accessible to the reader.