text: (Escape): This "advanced" move mode lets you move objects by clicking directly on objects and dragging the mouse to move them. In addition, (H) lets you move objects up and down while (R) allows you to rotate them.
  (SHIFT) + Move: If you don't want the object you're moving to snap to the terrain or other objects, press the Shift key while you're moving it.
  (G): While adding or moving objects in your scene this key allows you to turn off 'snap-to-vehicles and -people', so that you do not accidentally stack new objects on top of these object types.
  Lumion is under constant development, so it is not unlikely that we'll add more options in the future.
  Having these options in Lumion obviously doesn't mean that we'll never implement additional methods for placing foliage and other entourage en-masse. As an example, we've had a bunch of suggestions for a feature that would make it possible to populate a surface or an area with a user-configurable pool of objects.
  2) If you load a standard JPG file, 100% black equates to a terrain height of 0m and 100% white is equal to a terrain height of 200m. In other words, each greyscale step (from 0 to 255) is equal to 0.78125m.
  You can also import your own terrain as a DAE/FBX object and apply a landscape material to it. This allows you paint it just like the native terrain in Lumion.
  That being said, more flexible ways of dealing with user-imported terrains/heightmaps may be implemented in the future.