已知抛物线\(C:{{y}^{2}}=2x\)的焦点为\(F\)，平行于\(x\)轴的两条直线\(l\)\({\,\!}_{1}\)，\(l\)\({\,\!}_{2}\)分别交\(C\)于\(A,B\)两点，交\(C\)的准线于\(P,Q\)两点．
\((I)\)若\(F\)在线段\(AB\)上，\(R\)是\(PQ\)的中点，证明：\(AR\)\(‖\)\(FQ\)
\((II)\)若\(\triangle PQF\)的面积是\(\triangle ABF\)的面积的两倍，求\(AB\)中点的轨迹方程．