Variable: dframe-controlled
dframe-controlled is a buffer-local variable defined in dframe.el.gz.
Documentation
Is this buffer controlled by a dedicated frame.
Local to those buffers, as a function called that created it.
Source Code
;; Defined in /usr/src/emacs/lisp/dframe.el.gz
(defvar-local dframe-controlled nil
"Is this buffer controlled by a dedicated frame.
Local to those buffers, as a function called that created it.")