wondering about /usr/ports/packages/i386/cdrom

[Oliver Fuchs <oliverfuchs_(_at_)_onlinehome_(_dot_)_de>]

Hi,
I am new to the list and new to OpenBSD 3.6.
To intodruce myself: I started with windows, went over to debian linux and
ended up in FreeBSD and starting now to use OpenBSD.
I am going to use OpenBSD mainly to download and manage my emails. So the
important packages for me are mutt, procmail, fetchmail and sendmail.
I first installed OpenBSD on my Toshiba Satellite laptop but the terminal
could not fit the laptop screen. So I installed it on my main PC: two
hardrives wd0 and wd1 with wd0= Windows and OpenBSD and wd1=FreeBSD.
It took a while to install OpenBSD on the shared disk and it was a little
bit tricky but finally I managed the installation with the help of
fdisk/bootloader from the FreeBSD system.

What I found now that made me wondering:
I downloaded for 3.6 the midnight commander in the ports tree with make
install. I have copied all the packages that came with the OpenBSD CDs to
/usr/ports/packages/All like I did in FreeBSD.
Now what I do not understand is the way OpenBSD is storing the
downloaded/compiled packages.
The mc-packages was copied to /usr/ports/packages/all and
/usr/ports/packages/ftp.
Is the /usr/ports/packages/cdrom for all the packages from the Distribution
CD?
I also noticed that doing a package installation this way (with make
install) OpenBSD does not check if dependencies-packages are already on the
system (e.g. in /usr/ports/packages/cdrom) so that they do not have to be
downloaded anymore. But if I do an pkg_add via ftp  this directory is
checked as far as I can see it.
I know there is an environment for portupgrade and the pkg-tools on FreeBSD
- is there something similar on OpenBSD?

Thanx for your patience

Oliver
-- 
... don't touch the bang bang fruit