auto_LitFetchR_setup    Automating the retrieval of references based on
                        a saved search string(s).
create_save_search      Creates and saves search string(s).
dedup_refs              Deduplicates the references from up to three
                        dataframes.
manual_fetch            Manual literature retrieval.
remove_scheduled_task   Removes a scheduled task.
save_api_keys           Saves Web of Science, Scopus, and/or
                        NCBI/PubMed API keys in .Renviron.
