A community of 30,000 US Transcriptionist serving Medical Transcription Industry
A question about how to type something came up between coworkers, and in order to resolve it I did some online searching. I was stunned to learn that there were just as many "expert/authoritative" sites saying that their way was "the right way" to do it as the other way. (None indicated that it was optional or that either way was fine.)
It is striking how many differences there are amongst reference materials; I even found "tendinitis" misspelled (as "tendonitis") in one of them.
BOTTOM LINE: Don't be so quick to take everything in these reference materials at face value. Check things out -- thoroughly.