25 setxunit
7.5 setborder
90 setangle_repere
-1 1 setxrange
-2 1 setyrange
1 1 settkstep
.5 .5 setsubtkstep
2 2 setmkstep
ticks
subticks
marks
traceaxes
axesarrow
.75 setlinewidth
continu
noir
/X {settvar
#rpn#   Sin (t) ^ 3
} def
/Y {settvar
#rpn#   Cos (t) - Cos (t) ^4
} def
 0 2 pi mul  {X} {Y} Courbeparam