Property (Programming): Programming Language, Data Member, Instance Variable, Object Pascal

Object (computer science): Computer Science, Programming Language, Value, Variable, Subroutine, Data Structure, oriented

Oberon (programming language): Programming language, Niklaus Wirth, Pascal

Protocol (Object-Oriented Programming): Object-Oriented Programming, Java, Programming Language, Logtalk

XLISP: Object Oriented Programming, Lisp Programming Language, Scheme (Programming Language), Common