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

======Purpose:======
When you use [[window new]] or [[window show]] to split the screen into
multiple windows, one of the windows on the screen has to be split in half
to make room for the new window.  This value controls which window is 
selected to be split.

======Description:======
When OFF: The current window is cut in half.
When ON: The largest window on the screen is cut in half.

Exception: If the size of the current window is < 4 lines, the largest 
window is split, without regard to this value.

[[window fixed|Fixed]] windows are never considered the largest window.