25 setxunit
7.5 setborder
90 setangle_repere
-2 10 setxrange
-2 10 setyrange
[1 1 .5 .5 .1 .1] {orange} Quadrillage
/quadrillagegray 0.4 def
1 setquadrillagexstep
1 setquadrillageystep
quadrillage
1 1 settkstep
.5 .5 setsubtkstep
2 2 setmkstep
xsubticks
traceOx
axeOxarrow
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