> So that is consistent: it always displays at elevation 0.

Exactly, I hadn't realized that before as well.

> terrain usually resides at the 0 level and the plugin is probably designed with that in mind. What do you do with a terrain floating on a higher level?

Usually yes, but there are exceptions as always, e.g. when you want to model the terrain based on an architect's plan where zero is the top of your base plate, without having to do a lot of calculations.

It *shouln't* be a huge code change and in the mean time at least I managed to get the grid at the right elevation, but didn't get the rest working. At least I tried... I'm confident it'd be an easy task for @Puybaret