my father 's treatment of it subsequently was unlike that of tinuviel and turambar ( where the original text was erased and a new version written in its place ) ; in this tale he did not set down a complete new text , but allowed a good deal of the old to stand , at least in the earlier part of it : as the revision progressed the rewriting in ink over the top of the pencilled text did become almost continuous , and though the pencil was not erased the ink effectively obliterates it .