Numbering of citations with shared results

Small feature request. I share search results with clients and often want to alert them to particular papers of interest. One way to do this would be via labels being visible in shared results but (whilst waiting for that feature to hopefully appear) another would be if there was an option to enable numbering in the shared results. Then could say papers, 3 27 and 55 look particularly relevant whilst 78 &115 are useful reviews etc. Thanks Rob