On Wednesday, 24 Jan 2018 at 15:21, Kaushal Modi wrote:
> Did you do that lower-casing by hand? Or do you have an elisp snippet or
> some script that does that?

I have no idea how Nicolas did the changes but, remember, org has the
full power of Emacs behind it (it's all text ;-)) so a simple
query-replace-regexp (or without query) using an appropriate regex to
catch all directives will do the job?

-- 
Eric S Fraga via Emacs 27.0.50, Org release_9.1.6-352-g92176c