Here's the source (Kiddushin 31b and Shu"A).
Comparing to Shabbos, for example, the 39 Melachot are extensively detailed and each spans tens of pages. However, for those 6 "Melachot" of Kibud Av, there are no details I could find. Both Rambam and Shu"A just recite this phrase in whole without elaborating.
While "מאכיל ומשקה ומלביש" are a bit more common, what constitutes the Melachah of מכסה, מכניס and מוציא?
Where can I find specifications of each one of the 6 actions mentioned?