Paint
Copy and paste
Select a block by dragging on the map, then Copy. Paste shows a transparent preview under the cursor; click to place it. Esc cancels.
Edits
The download lists the final values of every changed cell. A later step will apply it to a copy of the save.
2. Edits
or pick a cell_edits.json file:
Drop a cell_edits.json here, or click to choose