 Usage:  d1 = varorder(tb,te,t,di,diff,typ,ytt,outp)  
 
 Input:

  tb                     integer, (time) begin 
                         
  te                     integer, (time) end 
                         
  t                      integer, number of observation time points 
                         
  di                     integer, dimension of time series 
                         
  diff                   integer, difference of lags 
                         
  typ                    integer, describing the model type 
                         
  ytt                    vector, the transformed time series 
                         
  outp                   matrix 
                         
 Output:

  d1                     matrix, the estimated coefficients 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
