The range model protocol is implemented by the range and product classes. User-defined models may implement it too.

range-value ( model -- value )

range-page-value ( model -- value )

range-min-value ( model -- value )

range-max-value ( model -- value )

range-max-value* ( model -- value )

set-range-value ( value model -- )

set-range-page-value ( value model -- )

set-range-min-value ( value model -- )

set-range-max-value ( value model -- )