First - best wishes all for a happy and healthy 2020! As my nickname implies - my primary means to contribute to Python is with regard to AIX. One of the things I recently came across is Misc/README.AIX which was last updated sometime between 2010 and 2014. I am thinking a facelift is in order. Assuming 2010-2011 as the original date - much has changed and many of the comments are no longer accurate. Before saying so, I would like to check here that - having all tests pass on the 3.8 bot implies that there are no outstanding issues. As to the historical issues in the current document - these could either be deleted, or a short text describing when they were resolved (e.g., Python 3.7, or just resolved, but noone knows exactly how or when - whether it was a Python change, or a platform (AIX) change. What I see as being more relevant is the description re: how to build Python for AIX - for the "do it youself"-ers. So, besides the direct question re: what to say about the old "known issues" and whether there are no known issues aka, no issues identified via the standard tests - I would appreciate feedback on what is considered appropriate - anno 2020 - for any Misc/README.platform text. Additionally, I am willing to work on other areas of the standard documentation where it is either needed or considered appropriate for platform specific details and/or examples. This is not something I would try to get done in a single PR, Instead I am thinking a single -longer term- issue - and multiple PR's to work through corrections and additions during 2020. Focus on Python 3.9 and beyond yet where appropriate backlevel to Python 3.8 or even 3.7. Sincerely, Michael