userType
#include <Aliases.h>
OSType userType; 4 0 application's signature unsigned short aliasSize; 2 4 size of record when created
n 6 variable length private data
typedef AliasRecord *AliasPtr;
typedef AliasRecord **AliasHandle;
Notes: Your application can use the userType field to store its own signature or
any other data that fits into 4 bytes. When the Alias Manager creates an the aliasSize field. Knowing the starting size allows you to store and
retrieve data of your own at the end of the record (see Customizing Alias
200 to 300 bytes long.
The private Alias Manager data includes all of the location, verification, and mounting information needed to resolve the AliasRecord with the various search strategies described in