doc: /* Non-nil means splitting a window makes a new parent window.
If this variable is nil, splitting a window will create a new parent
window only if the window has no parent window or the window shall
-become a combination orthogonal to the one it it is part of.
+become a combination orthogonal to the one it is part of.
If this variable is t, splitting a window always creates a new parent
window. If all splits behave this way, each frame's window tree is a
Other values are reserved for future use.
-The value of this variable is also assigned to the combination_limit
+The value of this variable is also assigned to the combination-limit
status of the new parent window. The combination-limit status of a
window can be retrieved via the function `window-combination-limit' and
altered by the function `set-window-combination-limit'. */);