-These functions are used to send and recieve early data. Early data can be sent
-by the client immediately after its initial ClientHello without having to wait
-for the server to complete the handshake. Early data can only be sent if a
-session has previously been established with the server, and the server is known
-to support it. Additionally these functions can be used to send data from the
-server to the client when the client has not yet completed the authentication
-stage of the handshake.
+These functions are used to send and recieve early data where TLSv1.3 has been
+negotiated. Early data can be sent by the client immediately after its initial
+ClientHello without having to wait for the server to complete the handshake.
+Early data can only be sent if a session has previously been established with
+the server, and the server is known to support it. Additionally these functions
+can be used to send data from the server to the client when the client has not
+yet completed the authentication stage of the handshake.