使用IFS文法来编制棵树。通过单击屏幕窗口的绘图按钮，可以看到这棵树绘制出来的样子。-use grammar to prepare trees. By clicking the window screen graphics button, we can see this tree mapping out the victims.

画一系列同心圆．画任意直线．可是机度度个斤秒磅　结合能　飞机暖和棵；知识个时立刻机似的集散地风格内码饿哦派艰苦搞活啊-painting a series of concentric circles. Arbitrary linear paintings. But machine-jin degrees degrees seconds pounds warmer air will combine trees; immediately when knowledge-machine style sim

le code d un algoghithme pour les spanning trees