tfFold folds height values around a top or bottom value, turning summits into craters, or valleys into hills.

Without tfFold on the left and on the right tfFold is active.

Properties

tfFold, Properties tab menu settings.

Mode

There are two Mode settings: Fold Top, or Fold Bottom.

The Mode setting on the left is Fold Top. On the right, it is set to Fold Bottom.

Fold Top

Heightfield values that are above the Level setting will be folded down.

This can also be done by dragging the yellow handle on the tfFold icon in the viewport.

Fold Bottom

Heightfield values that are below the Level setting will be folded up.

This can also be done by dragging the yellow handle on the tfFold icon in the viewport.