Question about Installed Packages

[Allen]

Hi,

I'm using FreeBSD 10.1-RELEASE-p40

I've been using pkg to install the things I want installed, and I'm
wondering if there's a way, which I'm sure there is, to make a list of
all the Packages that I've installed since first installing my OS.

Basically, I'd like to make a list of every Package I've installed,
where I'd be able to see what I've installed. Really, anything that
would allow me to see a text list would be just fine, as I just want to
make a list of the Packages installed, and be able to view them, and of
course save the list.

I'm planning on upgrading my OS to a new version at some point as I'm
using an older version right now, and I already purchased 10.3 on DVD,
and whenever I install FreeBSD, I end up spending DAYS on the Web Site
looking on the Ports Collection to see what I want to install, and so
every time I get my machine how I want it, if I go to do a fresh
install which is what I normally enjoy doing, most of the time, but I'd
like to be able to have that list so I could just look at it and then
install whatever I want.

Thanks for any help,

-Allen