 Usage:  zz = zmulz(ord,di,tb,te,adj,opt,typ,ytt)  
 
 Input:

  ord                    integer, order of series 
                         
  di                     integer, dimension of time series 
                         
  tb                     integer 
                         
  te                     integer 
                         
  adj                    scalar 
                         
  opt                    integer 
                         
  typ                    integer, describing the model type 
                         
  ytt                    vector, the transformed time series 
                         
 Output:

  zz                     matrix 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
