Explain what the Kotlin code does?

Question

Android

fun main() = runBlocking {
  launch {
    delay(200L)
    println("Hello 1")
  }
  coroutineScope {
    launch {
      delay(500L)
      println("Hello 2")
    }
    delay(100L)
    println("Hello 3")
  }
  println("Hello 4")
}

or tell me where it is clearly written about the operators: "launch" and "coroutineScope"?

Answer 1

https://kotlin.github.io/kotlinx.coroutines/kotlin...