\(\(\( (*this\ is\ a\ comment*) \)\(
\)\(
\)\(\(\(x[t_] := Mod[xo + t/t1, 1]\)\(
\)
    \)		

    y[t_] := Mod[yo + t/t2, 1]\)\)\)

t1 = 5; t2 = 3; xo = 0.1; yo = 0;

ParametricPlot[{x[t], y[t]}, {t, 0, 18}, PlotPoints -> 600]

t2 = 3.05467; 
    ParametricPlot[{x[t], y[t]}, {t, 0, 50000}, 
      PlotPoints -> 5000]