Function: lower-frame
lower-frame is an interactive function defined in frame.c.
Signature
(lower-frame &optional FRAME)
Documentation
Send FRAME to the back, so it is occluded by any frames that overlap it.
If you don't specify a frame, the selected frame is used. If Emacs is displaying on an ordinary terminal or some other device which doesn't support multiple overlapping frames, this function does nothing.
Probably introduced at or before Emacs version 19.29.
Key Bindings
Source Code
// Defined in /usr/src/emacs/src/frame.c
{
struct frame *f = decode_live_frame (frame);
if (FRAME_TERMINAL (f)->frame_raise_lower_hook)
(*FRAME_TERMINAL (f)->frame_raise_lower_hook) (f, false);
return Qnil;
}