There are four files:
 - tourist_arrivals.dat (contains the data),
 - 1_plot.R
 - 2_stl.R
 - 3_stl_forecast.R (most interesting).

All are ASCII files, that is, you can open them with a simple
text editor. (Linux: "Kate" is an example of a suitable text editor;
very advanced users will prefer "Emacs". W: "MS-Wordpad" is a makeshift editor,
you might try to find something more powerful.)

To run in R (www.R-project.org):

1. Open R.

2. Change directory to the folder where files tourist_arrivals.dat, 1_plot.R, 2_stl.R and
   3_stl_forecast.R are located. (Or start R right from this forder.)
   The R command getwd() shows you where you are. The command setwd(...)
   lets you change the directory. The command dir() lists the contents of the
   current folder.

3. Enter the command source("1_plot.R") or source("2_stl.R") or source("3_stl_forecast.R")
   into the R command box.
   (Of course, you could also enter the code line by line.)

Good luck.

(HS, 2008-09-25)
