descriptor list
AEDescList structure
#include <AppleEvents.h>
typedef AEDesc AEDescList; list of descriptor records
A descriptor list is a data structure of type AEDescList defined by the data
type AEDesc-that is, a descriptor list is a descriptor record that contains a
list of other descriptor records. Like several other Apple Event Manager
data structures, a descriptor list is identical to a descriptor record of data type
AEDesc; the only difference is that the data in a descriptor list must always
consist of a list of other descriptor records.