DURATION

Purpose: This property specifies a positive duration of time. See DTSTART_TIMEZONE for information about the timezone handling The string representation follows the notation as given in RFC-5545 for the value type duration: [https://datatracker.ietf.org/doc/html/rfc5545#section-3.3.6] Exampe: "P15DT5H0M20S". This field is currently not in use. If present, the user would see a notification that a duration cannot be processed and will be overwritten if the entry is changed. See [https://tools.ietf.org/html/rfc5545#section-3.8.2.5] Type: String