What's on each FreeBSD 5.3 (i386) disc?

[David Tomic]

I want to install FreeBSD for the i386 architecture...there are 4 ISOs:

5.3-RELEASE-i386-bootonly.iso
5.3-RELEASE-i386-disc1.iso
5.3-RELEASE-i386-disc2.iso
5.3-RELEASE-i386-miniinst.iso

a) If I just burn the disc1 ISO image to a CD is that enough for a standard install?      

b) what's on disc 2 - ports?

c) what is the 'bootonly' disc for?

thanks in advance