i do not understand some parameters for integration of payment process

hi, please i am dealing with a payment processing for the first time, and there are some parameters i do not understand, please can any one refer me to a document or samples on the parameters so as to be able to integrate the code well.thanks

the parameters and their description on the payment process manual are below
gtpay_tranx_noti_url
The URL to which GTPay should send transaction status report to on completion of transaction. If not specified, merchant's…
i do not understand some parameters for integration of payment process

See original post by muyi