I don't understand the 'order' function

Julio Sergio <juliosergio <at> gmail.com> writes:

I thought I've understood the 'order' function, using simple examples like:

Thanks to you all!... As Sarah said, what was damaged was my understanding ( 
;-) )... and as Duncan said, I was confusing 'order' with 'rank',
thanks! Now I understand the 'order' function.

  -Sergio