aclocal or acinclude?

[John Calcote]

In the autoconf manual in Chapter 3, page 5 it states:

... If you write your own feature tests to supplement those that come 
with Autoconf, you might also write files called ‘aclocal.m4’ and 
‘acsite.m4’...

I understand acsite.m4, but I thought aclocal.m4 was *generated* by the 
aclocal program, not written by the user. I was under the impression 
that you were supposed to write project-specific macro in a file called 
acinclude.m4 (which the manual doesn't mention at all).

Most of my education comes from the Goat Book, which I realize is a 
little out of date. What's the new right way? :)

Thanks,
John