Nagendra has written technical specifications, factory acceptance tests (FAT), site acceptance tests (SAT), user manuals for all the Automation projects he commissioned in Australia and New Zealand and for all the products he has developed. Good documentation is really important when it comes to user training and troubleshooting.
If you require technical documents written or vet your documentation, he would be more than happy to oblige. Feel free to discuss with him. You can send an email to yarltechnologies@gmail.com