prism_get_calendar_type (calendar_name, calendar_type_id, ierror)
This routine returns the name and the ID of the calendar used in the PSMILe. Currently, the only calendar supported is the `Proleptic Gregorian Calendar' (i.e. a Gregorian calendar13extended to dates before 15 Oct 1582) and its ID is 1 (i.e. the PRISM integer name parameter PRISM_Cal_Gregorian = 1, see oasis4/lib/common_oa4/include/prism.inc). Simple calendars with 360 and 365 days are implemented but not directly available to the user. In a future version, the calendar type should be chosen and specified by the user in an XML configuration file, read in from this XML file by the Driver, and transfered to the PSMILe.