Unsure of protocol, but this is just a first ACK. The 1st reply was included in my early experiments, but I tested it again. The 3rd reply looks promising, but I'm working from the 2nd reply now... My ignorance remains profound, but I suspect I can clap the third hand.
Comment on Re^3: Running a CGI script from a command line?
Just a second ACK. From studying the debugging docs in the 2nd reply, it appears that I was doing the correct thing, and yet it does not work. From running with the -w parameter I found a trivial mistake to fix. From running with the -d parameter, I received the mixed blessing of reams of unknown data. Time for meditation.