Reset albedo or slopes
(lithos Main Menu Option A. Reset albedo or slopes)
This Main Menu option resets the albedo or slope. You can reset either slope or albedo, or both.
It is useful to reset slopes and albedos, for instance, when there is an artifact (such as from an improperly aligned image) that is giving trouble.
Doing this too often (such as while iterating) will degrade the shape since you keep throwing away useful information.
When you choose Option A. Reset albedo or slopes from the Main Menu, you will see this set of Prompts:
Main Menu: Q 0123O IUCRSG NVAMBX DEPL FZH? a >a Reset slopes? (y/n) y Reset albedos? (y/n) y
(Compiled by JRW)