You are prompted to identify the nodes to be deleted or the area inside which all nodes will be deleted. This is controlled by the Area option menu. Six options are supported:

• None: Use to delete nodes interactively one by one with data points.

• Block: Using the pointer, select two data points to create a block.

• Oriented Block: Using the pointer, select two data points to create an oriented block.

• Element: Using the pointer, select an existing closed vector element. • Shape: Using the pointer, draw a shape.

• Image: Use to delete nodes inside the extent of the active image.

• Unlimited: Use to delete all nodes.

Used to turn the Use Fence feature ON or OFF.

When Use Fence is ON, the tool works on the raster(s) overlapped by the fence and ignores the selected raster(s). If the fence mode is not set to “Clip”, it will be used but treated as a fence clip. The area option button is grayed out. When Use Fence is OFF, the tool works on the selected raster(s). The area option button is available.