LOGGER IN r, msg function in R

Question

I am a beginner in R, While I have to edit some pre written codes in R. there is a specific one which I cannot understand. it would be really helpful if anyone can help me understand this.

# Logger
log.msg = function(msg){
  ## capture messages and errors to a file.
  fileConn<-file("output.txt", open = "a+")
  writeLines(c(msg), fileConn)
  close(fileConn)
}

 log.msg("Start Data extraction and merging..")

Answer 1

log.msg = function(msg){
  ## capture messages and errors to a file.

  ## create file connection in append mode (a+)
  fileConn<-file("output.txt", open = "a+")

  ## write the msg to this file
  writeLines(c(msg), fileConn)

  ## close connection
  close(fileConn)
}