

_G_e_t _o_r _S_e_t _W_o_r_k_i_n_g _D_i_r_e_c_t_o_r_y

     getwd()
     setwd(dir)

_A_r_g_u_m_e_n_t_s:

     dir: A character string.

_D_e_s_c_r_i_p_t_i_o_n:

     `getwd' returns an absolute filename respresenting the
     current working directory of the R process;
     `setwd(dir)' is used to set the working directory to
     `dir'.

_E_x_a_m_p_l_e_s:

     WD <- getwd()
     if (!is.null(WD)) setwd(WD)

