!!! Overview
[{$pagename}] is one of the four fundamentals of [Object-oriented Programming]

[{$pagename}] refers to the bundling of [data] with the methods that operate on that [data].

[{$pagename}] is used to __hide__ the values or [state] of a [Structured data] object inside a class, preventing [unauthorized] parties' direct access to them. Publicly accessible methods are generally provided in the class (so-called getters and setters) to access the values, and other client classes call these methods to retrieve and modify the values within the object.[1]

!! More Information
There might be more information for this subject on one of the following:
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* [#1] - [Encapsulation computer programming|Wikipedia:Encapsulation_(computer_programming)|target='_blank'] - based on information obtained 2017-04-18-