# addressbook example. Where is the message used in the notify action?

Section 2.6 of the EOSIO developer docs https://developers.eos.io/welcome/latest/getting-started/smart-contract-development/adding-inline-actions describes how send an inline action. It all works fine but I can't see how the message argument is used in the action code. The code for action is as follows:

[[eosio::action]]
void notify(name user, std::string msg) {
require_auth(get_self());
require_recipient(user);
}


Can anyone explain how the msg parameter is used within this action/function?