.screenrc with "tabs" using hardstatus and caption options

.screenrc

# look and feel
caption always "%{= bb}%{+b w}%h %=%{=b rw} %l %{= db} ${USER}@%H %{= dg}%c"
hardstatus alwayslastline "%-Lw%{= BW}%50>%n%f* %t%{-}%+Lw%<"

# skip the startup message
startup_message off

# go to home dir
chdir

# Automatically detach on hangup. 
autodetach on

# Change default scrollback value for new windows
defscrollback 10000

# start with visual bell as default
vbell on
vbell_msg "bell on %t (%n)"

activity "Activity in %t(%n)"

shelltitle "shell"
shell -$SHELL