I AM LOOKING FOR A REFERENCE BOOK FROM GNO. INSTEAD THERE IS STILL LINUX AS A REFERENCE...

https://lwn.net/Articles/909007/
https://lwn.net
We can see the making of the Linux kernel day by day...

https://mirrors.edge.kernel.org/pub/linux/kernel
You can see that Linux 1.0 was 1Mb of source code zipped (only 386).
You can see that Linux 2.4 was 25Mb of source code zipped (many architectures, powerpc, sparc...).
You can see that Linux 6.0 is more than 200Mb of source code zipped.

That's the little size of GNO that makes its advantage.
That's the little size of the //gs that makes its advantage.
So why is there no documentation for GNO ?
I hope we will soon be able to buy a book for GNO like Assembly Lines from Roger WAGNER...

When opening an archive of the Linux kernel 2.4 I found this in the documentation part.

Title : "The Linux Kernel" Author : David A. Rusling.
Description : On line, 200 pages book describing most aspects of
the Linux Kernel. Probably, the first reference for beginners.
Lots of illustrations explaining data structures use and
relationships in the purest Richard W. Stevens' style.
Contents : "1. -Hardware Basics, 2. -Software Basics, 3. -Memory Management,
4. -Processes, 5. -Interprocess Communication Mechanisms, 6. -PCI,
7. - Interrupts and Interrupt Handling, 8. -Device Drivers, 9. -The File System,
10. -Networks, 11. -Kernel Mechanisms, 12. -Modules, 13. -The Linux Kernel Sources,
A. -Linux Data Structures, B. -The Alpha AXP Processor, C. -Useful Web and FTP Sites,
D. -The GNU General Public License, Glossary".
In short : a must have.