Point grab tool

Point grab is a very simple heightfield tool. To raise or lower the terrain at a point, simply left-click on the point and drag the mouse up or down.

Selecting a point (note red circle)	Raising the point using the point grab tool.

Note you can change rendering modes from the default wireframe to the polygon mode by pressing the 'M' key. However, often it is easier to see what you're doing with the wireframe mode when editing terrain.

Editing terrain in polygon mode.