n7 A 1941 commentary summarizing rents after default acknowledges that the enforcement step is consistently required by the laws of the various states, recognizing that "the requisite action may consist of physical entry into possession and actual collection of rents, formal demand upon the mortgagor for possession and rejection, or securing the appointment of a receiver." Note, The Mortgagee's Right to Rents After Default, 50 Yale L.J. 1424, 1427-28 (1941). (footnotes omitted).