Give the id size: { w: 2, h: 2 } via .symbolData(...) and weight: 0 via .weights(...), place its anchor cell via setResult, and the engine paints OCCUPIED across the block.
See it work
Give the id size: { w: 2, h: 2 } via .symbolData(...) and weight: 0 via .weights(...), place its anchor cell via setResult, and the engine paints OCCUPIED across the block.