(i) Generically refers to local, slight irregularities in form and height of a land surface that are superimposed upon a larger landform, including such features as low mounds, swales, and shallow pits. (ii ) Slight variations in the height of a land surface that are too small to delineate on a topographic or soils map at commonly used map scales (e.g. 1:24 000 and 1:15 840).