sharp round hydrographic hypsographic anthropogenic
This enumeration is used by Breakline (in the creation of a Digital Elevation Model).
sharp: Identifies a marked angular change in terrain.
round: Approximates the position of a non-angular but significant change in terrain.
hydrographic: Partially or completetely defines a natural hydrographic feature associated with a change in terrain.
hypsographic: Partially or completely defines a natural non-hydrographic feature associated with a change in terrain.
anthropogenic: Partially or completetely defines a non-natural feature associated with a change in terrain.