... objects¹

In the practical implementation of PNtalk there is a possibility of using primitive classes with methods which change the state of the appropriate primitive objects, too. However, their usage makes it impossible even to think about a formal analysis, and it can also slow down the simulation (see ). The semantics of the transition firing in this case is similar to the one connected to non-primitive message receivers.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... transition²

This is the case of using the implicit method new. If a constructor method is used, a combination of N-, F-, and J-events arises.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... super.³

Its semantis is the same as in Smalltalk

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... activity.⁴

This model is inspired by Russian doll containing another russian doll etc..

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... implemented.⁵

in fact it is implemented only in experimental PNtalk engine in Prolog

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.