This pane in the Comprehensive Programmer provides programming for functions that are specific to an individual manufacturer, but outside the realm of the DCC standard. While items like Transponding may eventually find a place in the NMRA DCC standard, and are therefore in the Advanced pane, these items are obviously beyond that category. This pane will be manufacturer dependent and decoder family dependent
These items will, by definition, vary greatly between manufacturers. Once again, your best resource is the documentation for the specific decoder you are programming and this pane in the programmer for that decoder.