This is the device of placing words sous rature or 'under erasure', signified by crossing them through in the text and thus warning the reader not to accept them at philosophic face value

The teenage dread is not so much dramatized (as with Caulfield or Sport) but is, to borrow Jacques Derrida's phrase, sous rature -- as though the very presence of the idea owrks only to emphasize the extent to which it should be absent.

In Of Grammatology, Derrida introduced his reading of the Heideggerian strategy of overwriting, which he called "sous-rature."