Currently instructors are able to indent section headings. It would be really useful if they could also indent a particular citation within the sections. This would be particularly useful when there are two editions of a book, as it would make it clearer visually that the two citations are linked. We often list 2 editions of a book because we are unable to buy sufficient copies or there is not much difference between editions. Increasingly we may also have an e-book of a very old edition but only print copies of newer editions. Currently when there are multiple editions in a list, the lists looks long and a bit confusing. It might also be used for other readings which are linked in some way and could be treated as an either/or. Other uses might include associating a film with a book. Whilst the 'Other versions' feature may help in some cases, there are still many occasions where we wish to promote options more prominently.