Variable: tooltip-hide-delay
tooltip-hide-delay is a customizable variable defined in
tooltip.el.gz.
Value
10
Documentation
Hide tooltips automatically after this many seconds.
Probably introduced at or before Emacs version 21.2.
Source Code
;; Defined in /usr/src/emacs/lisp/tooltip.el.gz
(defcustom tooltip-hide-delay 10
"Hide tooltips automatically after this many seconds."
:type 'number)