Just to be clear, I'm not saying programs shouldn't provide help in response to "`-?`". It sounds like a good idea to me, because that would be an obvious guess

Just to be clear, I'm not saying programs shouldn't provide help in response to "`-?`". It sounds like a good idea to me, because that would be an obvious guess for what a user would mean by putting a question mark there. And, as you say, some help is a good response to any unrecognized option. I'm just saying that I hadn't realized programs did that. And I've been around a long, long time. I guess I'm just blind.