In the meantime... I've continued to check out the discussions in Duke University's English Comp I (also on Coursera). One student noted that the instructor in one video referred to "inches" when talking about indenting citations. There was no corresponding equivalent for "centimeters" mentioned in the video. The student's version of Word uses centimeters. Another student supplied the conversion to centimeters, but there you go! The question about what to consider when developing a course for a global audience was raised! While APA and MLA citation styles mentioned in the course are used in many situations, would it have been worth mentioning styles used in other countries? For example I gather that ABNT (Associação Brasileira de Normas Técnicas) is used in many universities in Brazil. Maybe acknowledging the existence of some other styles would be enough?