New in FirstClass Application Services 4.0 Service Pack •       new keyword class to store data values in memory for fast retrieval (HashTable) •       new keyword class for working with XML tree structures (XML) •       new keyword class for setting an incremental timer with millisecond accuracy (PerfTimer) •       new keywords: Keyword Purpose Email.DeleteSent Deletes the Mailbox copy of a message after completing a send, when impersonating a user. Field.SendResult Sends an integer result code to a field. File.MkDir Creates a folder. Form.FieldType Returns the integer type of a field. Form.SendResult Sends an integer result code to a form. Form.WaitFields Makes a helper application pause until all field data has been received.