_R_G_B _C_o_l_o_r _S_p_e_c_i_f_i_c_a_t_i_o_n
	
	     rgb(red, green, blue, names=NULL)
	
	_D_e_s_c_r_i_p_t_i_o_n:
	
	     This function creates ``colors'' corresponding to the
	     given intensities of the red, green and blue primaries
	     (the intensities must lie between zero and one).  The
	     names argument may be used to provide names for the
	     colors.
	
	     The values returned by rgb can be used with a col=
	     specification in graphics functions or in par.
	
	_S_e_e _A_l_s_o:
	
	     rainbow, hsv, gray.