Is there anyway that Vim can 'tag' or 'name' a window for future reference?

My requirement is a bit unique, so allow me to put a bit long story
here.

I have two 24-inch dell monitors for regular coding work. I usually
run a full-window terminal window and then run a console vim inside
the terminal. Due to the enormous size of the terminal, I usually
split it vertically into 4 windows like following:

| |
| | |
| |
| | |
| |
| | |
| |
| | |
| window 1 | window 2 | window 3
| window 4 |
| |
| | |
| |
| | |

I developed a whole bunch of customized commands for VIM to edit files
in different windows, move files between windows, etc, etc. (If you
are interested, you can look at http://code.google.com/p/spititan/source/browse/trunk/configuration/vimrc).

The problem I have is: the more I work on this window layout, the more
I feel that Vim lacks of facilities to identify windows, for example,
if I want to implement a customized command to exchange the files
between current window and window 1, I don't have a straightforward
way to identify the current window number, which is a major obstacle
to develop more sophisticated commands on this layout.

Anybody has any idea?

Thanks.

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