The study's (study_ard_functions()) and the company's
(company_ard_functions()) side by side: one row a function name. A
study's copy wins; when both have one, whether their files differ and
which is newer. Where the study's analyses use it, and the last time it
was tried (try_ard_function()).
Usage
own_ard_functions(study, home = tflplanner_home())