 On the occasion of the 50th anniversary of Otto Lenel's death, a sign was affixed to his last residence at Holbeinstrasse 5 in Freiburg, Germany.Lenel is best known for his reconstruction of the fundamental text of the Roman legal system, the so-called "edictum perpetuum" of the Roman praetors.The praetors were the government officials responsible for the administration of justice during the Roman republic and the principate.