Automating the creation and cleanup of object data. 3. The "Blue Box" Era
Influencing the "native code" approach rather than an interpreted one. Key Innovations in 5.5 included: Turbo Pascal 5.5 Object Oriented Programming Guide
Borland didn't invent these concepts from scratch. The OOP extensions were heavily inspired by: Automating the creation and cleanup of object data
Before version 5.5, Turbo Pascal was the undisputed king of MS-DOS because of its speed—it could compile programs in seconds that took other compilers an hour. When version 5.5 arrived, it brought to the masses. For many developers, this was their first real exposure to concepts like classes, inheritance, and polymorphism. Turbo Pascal 5.5 Object Oriented Programming Guide
Larry Tesler’s work for the Macintosh.
Flexibility in how memory was handled.