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-
- _G_r_a_y _L_e_v_e_l _S_p_e_c_i_f_i_c_a_t_i_o_n
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- gray(level)
-
- _V_a_l_u_e:
-
- This function creates ``colors'' corresponding to the
- given level or gray. The level must lie between zero
- and one, with zero indicating "black" and one indicat-
- ing "white".
-
- The values returned by gray can be used with a col=
- specification in graphics functions or in par.
-
- _S_e_e _A_l_s_o:
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- rainbow, hsv, rgb.
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-