| Name | Description | 
|---|
  'constructor' | Collection of operators to construct a DiscreteTransferFunction data record | 
  '+' | Contains operators for addition of discrete transfer functions | 
  '-' | Contains operators for subtraction of discrete transfer functions | 
  '*' | Contains operators for multiplication of discrete transfer functions | 
  '/' | Contains operators for division of discrete transfer functions | 
  '^' | Integer power of DiscreteTransferFunction (dtf1^k) | 
  '==' | Check whether two discrete transfer functions are identical | 
  'String' | Transform DiscreteTransferFunction into a String representation | 
  z | Generate the discrete transfer function z | 
  Analysis | Package of functions to analyse discrete transfer function represented by a DiscreteTransferFunction record | 
  Plot | Package of functions to plot discrete transfer function responses | 
  Conversion | Package of functions for conversion of DiscreteTransferFunction data record | 
  Import | Package of functions to generate a DiscreteTransferFunction data record from imported data |