Selections can be blocked from further editing, unblocked, and reverted to their original state.

Lock Pixels

Individual pixels can be restricted or "locked" from editing on the Active dataset by selecting the pixels that should not be edited by pressing the Lock button. Locked pixels are presented as dark pixels when the DEM layer is open in a window.

Default shortcut: none

Unlock Pixels

Individual locked pixels can be restricted, "locked" can be unlocked by creating a selection over the Active dataset and pressing the Unlock button.

Default shortcut: none