Follow the curvature of the ground
This button allows you to change the object's movement mode . Select the mode you want to use from the 3 available options.
By default, the " Follow ground curvature" option is enabled. When moving with the mouse, objects will follow both the elevation and angle of the ground.
Follow the ground
The second option, " Follow the ground" , allows objects to follow only the elevation of the ground. They will not orient themselves according to the angle of the ground.
Do not follow the ground
The third option, " Do not follow the ground" , keeps objects at the same elevation throughout the movement.