_W_r_i_t_e _d_a_t_a _t_o _a _f_i_l_e
	
	     write(x, file="data",
	             ncolumns=if(is.character(x)) 1 else 5,
	             append=FALSE)
	
	_A_r_g_u_m_e_n_t_s:
	
	           x : the data to be written out.
	
	        file : the name of the file (quoted) to write to.
	
	    ncolumns : the number of columns to write the data in.
	
	      append : if TRUE the data x is appended to file file.
	
	_D_e_s_c_r_i_p_t_i_o_n:
	
	     The data (usually a matrix) x are written to file file.
	     If x is a two dimensional matrix you need to transpose
	     it to get the columns in file the same as those in the
	     internal representation.
	
	_E_x_a_m_p_l_e_s:
	
	     # create a 2 by 5 matrix
	     x <- matrix(1:10,ncol=5)
	
	     # the file data contains x, two rows, five cols
	     # 1 3 5 6 9 will form the first row
	     write(t(x))
	
	     # the file data now contains the data in x,
	     # two rows, five cols but the first row is 1 2 3 4 5
	     write(x)