or rather the 35th Anniversary of the Jupter Ace manual was re-published in August 2017, thought the forthies on this group might want to snag a copy
https://www.amazon.com/Jupiter-ACE-Manual-Anniversary-Programming/dp/1785387294/ref=sr_1_fkmr0_1?ie=UTF8&qid=1513131648&sr=8-1-fkmr0&keywords=stephen+vickers+forth