True Flat- activate the script while holding the terrain tool, then hold Shift to align the brush position to voxel grid. Hotkey can be changed in the table lua script.
Brush size, speed, range and soil consumption rate editor UI for survival mode.
Terrain tool augments: inhibitor, analyzer, alignment, drill 3. You don't need to have them installed to use this cheat.
Color picker: the "arrow down" mode picks a soil color, "arrow up" paints soil with the picked color.