Several email and calendar programs such as IBM Notes, Microsoft Outlook, Google Calendar, and Apple Calendar can export and import ICS files. While I can export a calendar entry in my Notes calendar as ICS, it is not stored that way within the NSF. A put could place it on the file system but a separate task would be to do the import of ical.ics to the NSF. Perhaps someone can suggest a means of doing so without the UI (for example, open the ICS, parse it and ingest it). An example of code from a few years ago is available here: http://www.nsftools.com/tips/iCalBasic.lss