Slitherine

You opened a saved scenario and want to make some chances!

For erasing some 3d object:

"object placement mode!"

click on a object

hold "delete" button

and

move the cursor only above the objects on the map!

It works smoothly and fast!

The coolest 'thing' I've found you can do with the editor so far is if you need certain cover properties on a given tile (how much cover you THINK the terrain would have), you can use elements like "Boulder" which gives 45% cover (I believe) and just shrink it down to nothing with the End key on your keyboard so it's invisible and place it in a tile.