 Usage:  gh = covmwgen(covu,coeff,ord,di,adj,h,typ)  
 
 Input:

  covu                   matrix, covariance 
                         
  coeff                  matrix, estimated coefficients 
                         
  ord                    integer, order of series 
                         
  di                     integer, dimension of time series 
                         
  adj                    integer, 1=if adjusted, 0=if not 
                         
  h                      integer, forecast horizon 
                         
  typ                    integer, describing the model type 
                         
 Output:

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