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```flow
st=>start
e=>end
op0=>operation: 辨識畫布
op1=>operation: 辨識/猜測座標軸
cond1=>condition: 是否為函數圖形?
op2cd1=>operation: 函數辨識模型
op3=>operation: 嘗試各類函數
op4=>operation: 嘗試組合各類函數
op2cd2=>operation: 曲線辨識模型
op5=>operation: 組合(group)同系列的曲線
op6=>operation: 檢核誤差


st(right)->op0(right)->op1(right)->cond1
cond1(yes)->op2cd1(right)
cond1(no)->op2cd2(right)
op2cd1(right)->op3(right)->op4(right)->op6
op2cd2(right)->op5(right)->op6
op6(right)->e
```


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