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function Rx=InWindow(PA)
global XMIN XMAX YMIN YMAX
Eps=10.0^(-6);
X=PA(1); Y=PA(2);
if X>XMIN-Eps & X<XMAX+Eps & Y>YMIN-Eps & Y<YMAX+Eps
Rx='i'
else
Rx='o'
end
endfunction
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