vi command

Hi, I want to create an alias named vi that runs the command /usr/ucb/vi to edit text files;the alias should turn off the notification of new emails using the biff cmd before executing the vi cmd and turn biff back on after the vi cmd.
What I found on vi cmd in man is /usr/bin/vi ....[+command |-command]filename...What is this "ucb"? I came up with sth like this:
alias vi ' /usr/ucb/vi +biff n | -biff y '
vi filename
Is this anywhere close to what I need? Thanks in advance
P.S.
To guggach - THANKS.

ucb = University of California, Berkeley, an unix pionier (bsd)
dont use 'ucb' commands (they still are on the sys for compatibily reasons),
prefere /bin and /usr/bin

never give to aliases the name of a legal cmd
never do this
alias vi 'blah blah'
alias ls 'ls more options'
alias cd 'cd NEWDIR; ls;pwd' # a very worst one
use own names
alias myvi 'blah blah'

suppose you type (on cmd line)
cd /olddir; tar cf - . ¦( cd /newdir; tar xfvp -)
which cd will be used ? the second will probably cause a core-dump

you can concatenate cmds in alias
alias mycmd 'cmd1 ; cmd2 ; cmd3 ; and so on'

pay more attention reading man pages, that cmd in vi +cmd filename
is an editor command of vi, the notation ¦ -c cmd means
+cmd AND -c cmd are equivalent

finally, aliases can be very confusing and dangerous, because a lot
of people does not realize, they are NOT using a cmd but an alias, the
output can be essentially different ... and when piped to other cmds