hi,everyone
can anybody know the specific meaning of every phonebook field type in "pbkfields.hrh"??

#define EPbkFieldIdNone 0x00
#define EPbkFieldIdLastName 0x01
#define EPbkFieldIdFirstName 0x02
#define EPbkFieldIdPhoneNumberGeneral 0x03
#define EPbkFieldIdPhoneNumberStandard EPbkFieldIdPhoneNumberGeneral
#define EPbkFieldIdPhoneNumberHome 0x04
#define EPbkFieldIdPhoneNumberWork 0x05
#define EPbkFieldIdPhoneNumberMobile 0x06
#define EPbkFieldIdFaxNumber 0x07
#define EPbkFieldIdPagerNumber 0x08
#define EPbkFieldIdEmailAddress 0x09
#define EPbkFieldIdPostalAddress 0x0a
#define EPbkFieldIdURL 0x0b
#define EPbkFieldIdJobTitle 0x0c
#define EPbkFieldIdCompanyName 0x0d
#define EPbkFieldIdCompanyAddress EPbkFieldIdPostalAddress
#define EPbkFieldIdDTMFString 0x0f
#define EPbkFieldIdDate 0x10
#define EPbkFieldIdNote 0x11
#define EPbkFieldIdPicture 0x12
#define EPbkFieldIdThumbnailImage 0x13
#define EPbkFieldIdVoiceTagIndication 0x14
#define EPbkFieldIdSpeedDialIndication 0x15
#define EPbkFieldIdPersonalRingingToneIndication 0x16
#define EPbkFieldIdPOBox 0x17
#define EPbkFieldIdExtendedAddress 0x18
#define EPbkFieldIdStreetAddress 0x19
#define EPbkFieldIdPostalCode 0x1a
#define EPbkFieldIdCity 0x1b
#define EPbkFieldIdState 0x1c
#define EPbkFieldIdCountry 0x1d
#define EPbkFieldIdWVID 0x1e
#define EPbkFieldIdSecondName 0x1f
#define EPbkFieldIdPhoneNumberVideo 0x20
#define EPbkFieldIdLastNameReading 0x21
#define EPbkFieldIdFirstNameReading 0x22
#define EPbkFieldIdLocationIdIndication 0x23