Thanks kamrananvaar.That certainly looks interesting. I found lots of favourable reviews via goole, and the screen casts on the Zotero web site are very instructive.
Thanks, I shall try it soon (when my dead PC is fixed), but more importantly I shall draw it to the attention of my offspring at university, where its feature set would be ideal.
Meanwhile I have my own news to report. Miro (see earlier in this thread) has been an absolute marvel in making modifications to Notecase Pro, which should go a long way to meet my "fanciful spec" (see earlier). From discussion and screenshots, it looks very promising. As soon as I get my PC working, I hope to test it, and report back.