The rule of 1223 is the Franciscan Rule properly so called, the rule which the Friars Minor still observe. It is named by Franciscan authors "Regula bullata" or "Regula secunda." From what has been already said, it may be gathered that St. Francis successively developed his rule, adapting it to the circumstances. Those who believe in an influence exercised on St. Francis in recasting the third rule the point that Pope Gregory IX, in the Bull "Quo elongati" (1230), says that he knew the intention of St. Francis with regard to the rule, as he had assisted him when he wrote it and obtained its confirmation.