Where can I find documentation for working with the Payeer API?

Question

Machine translation from one language to another

Where can I find descriptions of how to work with the Payeer API? I could not find it on the official site and Google did not help.
There are modules for engines on the official site, but still, it will be faster to get acquainted with the documentation (description of the protocol).
Actually, I need to know how to provide the user with an invoice for payment and how to transfer money from the merchant's wallet to another wallet?

Answer 1

https://www.payeer.com/upload/pdf/PayeerMerchantru.pdf

Answer 2

Here I found a small PHP project https://github.com/mzcoding/payeer , you can quickly figure it out to understand how to work with api