There is a preference item to enable archive context menus. Can these menus be edited?
Edited in what way? What do you want them to do?
My original motivation was that if I could see what commands were being run by the context menu entries that might help me create a context menu entry to extract the contents if an archive file to a specific location, but I've since figured out how to do that, so I don't really care anymore.
In case anyone reading should care, the context menu entry that I created runs the commands
Copy extract to F:\Temp
Go F:\Temp Newtab=findexisting