Problem with "Preparing Your Own Installation Media" chapter

[Jubal Kessler]

Hello,

In section 2.13.1, I couldn't find an explanation for the "boot-only" 
ISO disc image that's available for the FreeBSD 5.2.1 release:

http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/install-diff-media.html

It would be nice if you could add a description for the boot-only ISO. 
The sentence "The additional disc images are useful, but not essential, 
especially if you have high-speed access to the Internet." is not really 
adequate for the first-time user who encounters the "boot-only" disc 
name and wonders whether that, and not disc1, is the actual first 
install disc.

Thanks,

Jubal Kessler