SEEK_CUR
#define SEEK_CUR 1 /* set file offset to current plus offset */
# define SEEK_CUR 1 /* Seek from current position. */
#define SEEK_CUR 1 /* set file offset to current plus offset */
# define SEEK_CUR 1 /* Seek from current position. */
#define SEEK_CUR 1 /* set file offset to current plus offset */