A very basic send test for Arduino with nrf24l01

nrf24l01_basicSend

#include <nRF24L01.h>
#include <RF24.h>
#include <RF24_config.h>
#include <SPI.h>
int msg[1];
RF24 radio(9,10);
const uint64_t pipe = 0xE8E8F0F0E1LL;
/*
this is the most basic sketch I can think of to transmit data from an nrf24l01.
It loops over the numbers 0-255 continuously and sends each number to the receiving 
unit.  I have used this pattern as a test to check for drops in the signal by 
checking the receiving end for gaps between numbers.  It's not sophisticated,
but it seems to work.
*/
 
void setup(void){
  Serial.begin(9600);
  radio.begin();
  radio.openWritingPipe(pipe);}
 
void loop(void){
  
  for (int x=0;x<255;x++){
  msg[0] = x;
  radio.write(msg, 1);
  }
}

Newbie here.
Doing the god's work out there!
Also it would be amazing if you could tell, what these functions(radio.write) EXACTLY do, in simple words, the one's you use.
Thanking Ya!