modify-all-frames-parameters

modify-all-frames-parameters is a compiled Lisp function in `frame.el'.

(modify-all-frames-parameters ALIST)

Modify all current and future frames' parameters according to ALIST.
This changes `default-frame-alist' and possibly `initial-frame-alist'.
Furthermore, this function removes all parameters in ALIST from
`window-system-default-frame-alist'.
See help of `modify-frame-parameters' for more information.