R1_RER
#define R1_RER (1U<<25) /* end of ring mark */
#define R1_RER (1U<<25) /* end of ring */
#define R1_RER (1U<<25) /* wrap mark to form a ring */
#define R1_RER (1U<<25) /* end of ring mark */
#define R1_RER (1U<<25) /* end of ring */