Help - Glossary - E - Encapsulation
refers to a basic feature of Squeak (and Smalltalk): The programs written and running inside Squeak are Objects, that is packages of data (stored in instanceVariables or classVariables) and methods, such that the data of an Object can only be manipulated by the Methods of that Object. This last feature is called "encapsulation". In other programming languages data and programs (methods) are far less tightly knit together.
Glossary - E