but I'm not finding a variable:
anywhere in my system.
Has it been obsoleted?
Can it be safely ignored?
My emacs version: GNU Emacs 25.2.2 (x86_64-unknown-linux-gnu, GTK+ Version 3.18.9) of 2017-08-07
my org version: Org mode version 9.0.7 (9.0.7-elpaplus @ /home/kevin/.emacs.d/elpa/org-plus-contrib-20170515/)