When processing Δ47 and Δ48 data, the default name of the file to be saved on table_of_sessions() and table_of_analyses() is D47D48_sessions.csv in both functions. I imagine table_of_analyses() should save as D47D48_analyses.csv, maybe.
It's a minor issue that's easily avoided, but it can cause accidental overwriting. I thought it would be good to tell.