第八十一条 有下列行为之一的，处十日以上十五日以下拘留，并处一千元以上二千元以下罚款：
"So to flood that seemed like a completely daft idea."
。safew官方下载对此有专业解读
The spatial view (the grid of rectangles) and the tree view (the hierarchy of nodes) represent the same structure. Searching for a point means walking down the tree: at each node, you check which of the four children contains your target coordinate and recurse into that child. You never visit the other three.
That was the gap. confusable-vision is the tool I built to close it: render every confusable pair, measure the pixels, and put a number on what “visually confusable” actually means.