Otherwise, men and women who otherwise behave as husband and wife did "not" have a common-law marriage or a marriage by habit and repute merely because they set up housekeeping together, but they "must" have held themselves out to the world as husband and wife. (In many jurisdictions, they must do so for a certain length of time for the marriage to be valid.) The Scottish Survey is not clear on these points. It notes that "common-law marriage" is not part of Scots law, but it fails to note that "marriage by cohabitation with habit and repute", which is the same thing but in name, "was" part of Scots law until 2006.