What the role of the function nexInit() is?

[zandam-xrn]

Hello, I'm using your library on an esp32 and I'm doing some tests with a Nextion display.
I noticed that in each example the communication is initialized with nexInit(); line of code.
I dug in the library and that function basically sends to the display, using the serial communication, some commands.

bool nexInit(void)
{
    bool ret1 = false;
    bool ret2 = false;
    
    dbSerialBegin(9600);
    nexSerial.begin(9600);
    sendCommand("");
    sendCommand("bkcmd=1");
    ret1 = recvRetCommandFinished();
    sendCommand("page 0");
    ret2 = recvRetCommandFinished();
    return ret1 && ret2;
}

In my case this function gave me some error so I tried to remove that loc.
Unexpectedly the display was still able to boot and to communicate with my esp32.

So my questions are: is initialize the display important? Why does everything work the same without it? Can there be problems not sending those commands (bkcmd=1 and page0)?

[danger21th]

same problem