@brackin Thanks for the comment. Both fair points. I submitted it because I thought it might be helpful for experienced people who keep getting asked for help.

@brackin Thanks for the comment. Both fair points. I submitted it because I thought it might be helpful for experienced people who keep getting asked for help. The six hours refers to my (fairly leisurely - read non-specialist) pace; I didn't factor in propagation because I was just counting the time taken by the creator. [Edit: reposted so it's threaded with the original comment.]