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function f(x) { y = 1/0; return y }

aX = 1880; bX = 1980; aY = 0; bY = 90
Dx = 10; Dy = 10

C1="blue"; C2="red"; C3="brown"
L1x = [1880,1890,1900,1910,1920,1930,1940,1950,1960,1970,1980]
L1y = [19,21,23,28,31,27,23,37,65,88,79]
L2y = [5,6,6,7,9,9,8,7,13,25,25]; L2x=L1x
L3y = [42,32,32,30,30,32,31,19,8,5,3]; L3x=L1x
Q1x=Q2x=Px=L1x; Q1y=L2y; Q2y=L1y; Py=L3y
yy=[50]

AX = ""; BX = "kg"; AY = ""; BY = "anni"
AAX=""; BBX=""; AAY=""; BBY=""

T0=["1880",1880,-4]; T1=["1900",1900,-4]; T2=["1920",1920,-4]; T3=["1940",1940,-4]; T4=["1960",1960,-4]
T5=["1980",1980,-4]; T6=["20",1876,20]; T7=["40",1876,40]; T8=["60",1876,60]; T9=["80",1876,80]
s0=["frutta",1960,85]; s1=["carne",1920,14]; s2=["grant",1900,37]