玩法四：8:1 超长图，无限拓展的画布
Normalization (ANF/K): Typed AST → Normalized IR
，更多细节参见谷歌浏览器【最新下载地址】
- Allow user to specify the anchor positions (horizontal and vertical) for the icon relative to the canvas (default: center and center)
To make use of these, first let's establish a baseline of what the "normal" Python prompt does.