======Synopsis:======
[[set]] show_status_all [on|off|toggle]

======Description:======
When turned on, the status bars of all visible windows will show all
current information regarding that window.  When off, information
that is duplicated by multiple windows is only shown in the current
window.  For windows on the same server, the nickname and user mode
is only shown in the current window.  For all windows, the time is
only shown in the current window.