It is well known that indefinite phrases are more liberal in taking scope than other quantifying phrases. In general, the scope of indefinites is not limited by the finite clause in which they occur, although the scope of universal quantifiers is. Wh-phrases behave very much like indefinites: in languages with wh in situ, their scope need not be restricted by anything like clause boundedness. In a recent paper, Tanya Reinhart has proposed to explain the difference between indefinites and wh-phrases on the one hand and non-indefinite quantifiers on the other hand by means of the following assumptions (cf. Reinhart 1994).