Thanks for the link to that mailing list, Alexandra -- I wasn't familiar with it at all. The 2011 thread can be read here: https://www.jiscmail.ac.uk/cgi-bin/webadmin?A1=ind1110&L=ARCHIVES-NRA#160 The 2012 reprise is here: https://www.jiscmail.ac.uk/cgi-bin/webadmin?A1=ind1201&L=ARCHIVES-NRA#164 Ben