#define EXIF_TAG_GPS_AREA_INFORMATION 0x001c
#define EXIF_TAG_GPS_DATE_STAMP 0x001d
#define EXIF_TAG_GPS_DIFFERENTIAL 0x001e
+#define EXIF_TAG_GPS_H_POSITIONING_ERROR 0x001f
/*! What level of support a tag enjoys in the EXIF standard */
typedef enum {