Definition of "unaltered"

Pat found subject and scene of his wooing unaltered, but all his specious blandishments could not induce the matured matron of 'Gi' Away Nothin' 'All' to join fortunes, though his perseverance would have delighted Bruce's spider.

1907, Barbara Baynton, edited by Sally Krimmer and Alan Lawson, Human Toll (Portable Australian Authors: Barbara Baynton), St Lucia: University of Queensland Press, published 1980, page 187

But beyond these cut-offs, to avoid the wholesale alteration of all mileposting and mileages—of bridges and culverts, for example—the original mileposts have remained unaltered.

1946 July and August, “Mileposts and their Peculiarities”, in Railway Magazine, page 217