A study of continuing importance is that of Albrecht Alt, who in 1934 published an analysis of the Covenant Code which hinges on the distinction between casuistic and apodictic law.[5] The Covenant Code consists largely of case or casuistic law (often in the form of an "if-then" statement, in which specific situations are addressed),[6] as for example Exodus 21:33–36. Apodictic laws (characterized by absolute or general commands or prohibitions, as in the Ten Commandments)[6] on the other hand, also appear in the Covenant Code, for example in Exodus 21:17.[7] Alt claimed, though some scholars disagree, that the apodictic laws were a feature only found in Israelite codes.[8] Scholars do, however, agree that the contrast between the apodistic and casuistic forms is a clue to how multiple sources of law were edited together into the Covenant Code,[9] although there remain disagreements over the precise details.[10]