Applications Programming in Smalltalk-80(TM): How to use Model-View-Controller (MVC) Author's note: This paper originally described the MVC framework as it existed in Smalltalk-80 v2.0. It was updated in 1992 to take into account the changes made for Smalltalk-80 v2.5. ParcPlace made extensive changes to the mechanisms for versions 4.x that are not reflected in this paper. Copyright (c) 1987, 199