display-buffer-in-side-window

display-buffer-in-side-window is a compiled Lisp function in `window.el'.

(display-buffer-in-side-window BUFFER ALIST)

Display BUFFER in a side window of the selected frame.
ALIST is an association list of symbols and values. The
following special symbols can be used in ALIST.

`side' denotes the side of the frame where the new window shall
be located. Valid values are `bottom', `right', `top' and
`left'. The default is `bottom'.

`slot' if non-nil, specifies the window slot where to display
BUFFER. A value of zero or nil means use the middle slot on
the specified side. A negative value means use a slot
preceding (that is, above or on the left of) the middle slot.
A positive value means use a slot following (that is, below or
on the right of) the middle slot. The default is zero.