A good and short "make" tutorial

Since Martyn said to use makefiles instead of batch files I needed 
to know about makefiles, so I found a good tutorial on them. The 
tutorial is short, but it is well written and pretty easy to 
understand. Here is the link for anyone who wants to learn about 
makefiles.

http://www.eng.hawaii.edu/Tutor/Make/
http://www.eng.hawaii.edu/Tutor/Make/
http://www.eng.hawaii.edu/Tutor/Make/

- later, SUn