my initial .tmux.conf: recreates my Screen setup in large part

.tmux.conf

# Use ^A like Screen
unbind C-b
set -g prefix C-a
bind-key a send-prefix

## standard Screen shortcuts
# next sp
bind Space next-window

# status/message line colors
set -g status-bg blue
set -g status-fg white
setw -g window-status-current-bg black
setw -g window-status-current-attr bright
setw -g window-status-alert-bg red
setw -g window-status-alert-attr bright
set -g message-fg white
set -g message-bg black

# less cluttered status line format
set -g status-left ""
set -g status-right "| #S "

# need to set -current-format even though it's the same
setw -g window-status-format "#[bg=blue] #[default]#I #W"
setw -g window-status-current-format "#[bg=blue] #[default]#I #W"

# my ported .screenrc key bindings
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R
bind w setw monitor-activity
bind K confirm-before kill-window
bind L set-option status
bind -n C-right next
bind -n C-left prev
bind \ confirm-before kill-server
bind "'" choose-window
bind A command-prompt "rename-window '%%'"
bind S command-prompt "rename-session '%%'"
bind "#" command-prompt -p 'Move window to:' "move-window -t '%%'"

# pull window
bind "v" command-prompt -p 'Move window here from:' "move-window -s '%%'"

# create new sessions
bind N new-session

# reload this file
bind . source-file ~/.tmux.conf

# start window indexing at one instead of zero
set -g base-index 1

# visual beep from any window
set -g bell-action any
set -g visual-bell on

# pass the xterm title through
set -g set-titles on
set -g set-titles-string "#T"

# screen creation stuff
bind I neww -n irc 'exec irssi'
bind M neww -n Mutt 'exec mutt'
bind R command-prompt -p ssh "neww 'exec ssh %%'"

# start irssi and Mutt in a new session
new -d -s main -n irc 'exec irssi'
setw -t:1 aggressive-resize on
neww -d -n Mutt 'exec mutt'
setw -t:2 aggressive-resize on