_R_e_p_l_i_c_a_t_e _E_l_e_m_e_n_t_s
	
	     rep(x, times, length.out)
	
	_D_e_s_c_r_i_p_t_i_o_n:
	
	     rep replicates the values in x according to the values
	     given in times and length.out.
	
	     If times consists of a single integer, the result con-
	     sists of the values in x repeated this many times.  If
	     times is a vector of the same length as x, the result
	     consists of x[1] repeated times[1] times, x[2] repeated
	     times[2] times and so on.
	
	     length.out may be given in place of times, in which
	     case x is repeated as many times as is necessary to
	     create a vector of this length.
	
	_S_e_e _A_l_s_o:
	
	     seq, sequence.
	
	_E_x_a_m_p_l_e_s:
	
	     rep(1:4,2)
	     rep(1:4,c(2,2,2,2))