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Text File  |  1997-04-23  |  236 b   |  11 lines
  1.     
  2.     _I_s _a_n _O_b_j_e_c_t _a _L_a_n_g_u_a_g_e _O_b_j_e_c_t?
  3.     
  4.          is.language(x)
  5.     
  6.     _D_e_s_c_r_i_p_t_i_o_n:
  7.     
  8.          is.language returns TRUE if x is either a variable name
  9.          or an expression.
  10.     
  11.