. . . . . . . . . "Unless a particular Required_situation obtains, Negative_consequences will follow. Alternatively, the Required_situation is required to achieve a Purpose (which avoids Negative_consequences). A set of Circumstances may be specified under which the requirement holds.\nYou must turn in your test by 5 p.m.\nYou better have that fixed by tomorrow or else we'll fire you.\nThe book needs to be shorter to sell to such a young audience."^^ . . . . . . . . . . . . . . . . "frame"^^ . . . . .