_A_r_g_u_m_e_n_t _l_i_s_t _o_f _a _f_u_n_c_t_i_o_n
	
	     args(fun)
	
	_D_e_s_c_r_i_p_t_i_o_n:
	
	     For a function fun, shows the argument list. If fun is
	     a character string then the function with that name is
	     found and used.
	
	_V_a_l_u_e:
	
	     A function with identical formal argument list but an
	     empty body.
	
	_N_o_t_e:
	
	     This is mainly used interactively. For computing, use
	     formals instead.
	
	_S_e_e _A_l_s_o:
	
	     formals, help.
	
	_E_x_a_m_p_l_e_s:
	
	     args(args) #-> NULL, as.long as  args remains a 'primitive' function.
	     args(plot.default)