iCal is a popular format for communicating calendar data. Many calendar applications, such as Microsoft Outlook, have the capability of importing iCal data to integrate those dates into the calendar.

Any WorkflowFirst application that contains date information can expose that information in the iCal format automatically.

To have a particular part of the database exposed in iCal format, you must enable the Calendar Feature as described in Show Calendar This tells WorkflowFirst which fields are to be used for the start and end date for the event. 

Once that is configured, you can then run a special query to retrieve the iCal file: 

http://servername/ical.aspx?path=<path>&from=<fromdate>&to=<todate > 

Here the <path> should be the XPath to the location in the database containing the event data. The fromdate and todate entries should define the range of dates you wish to include. The date can be in the local format. 

WorkflowFirst also supports a more recent format called iCalX, which is similar to the iCal protocol but in XML format. The same query can be used as above, but the page name would be icalx instead of ical.