Defined behavior

Defined behavior is the opposite of Undefined behavior (language), and it is also inspired by Undefined behavior (language). This esolang is invented by User:None1.

The behavior in this esolang is defined, but determined by the implementation, that means when you are making an implementation you can do anything you would like it to do, different implementations may cause completely different behvaior when executing the same program.

Literally, there is no specification

Computational class

The computational class is also determined by the implementation, for example, if the implementation is a brainfuck interpreter, it will be Turing complete.

Implementations

By definition, any program is a valid implementation of this language.