"... is an Arduino compatible, multi-master, multi-media network protocol. It proposes a Standard, it is designed as a framework and implements a totally software emulated network protocol stack that can be easily cross-compiled on many architectures like ATtiny, ATmega, ESP8266, ESP32, STM32, Teensy, Raspberry Pi, Linux. It is a valid tool to quickly and comprehensibly build a network of devices". If this is a wall of words that says nothing about what the project is for, we are not from the same universe. And also, I don't think an omitted word in a title that must be short will make all the project an incomprehensible garbage, considering the amount of time and effort has been invested in docs and specs.
I am sorry dozzie, did not want to be aggressive or dry, just I don't get what you mean. PJON works pretty much everywhere. The use you can do of PJON depends on your needs and the architecture that will execute it. In some cases PJON can be useful to "wire a bucket of Arduinos pin-to-pin to each other" but can also be used to create a virtual network computers running winx86, macosx or linux operating over the internet infrastructure. I think you would need some time to go through the available documentation and spec to have a clearer view of its features and limits.
