Sometimes users ask help for the same question or command again and again because sometimes it has hard for them to memorize it. Personally, I also face the same problem, I always forgot which hide line command is used for which one, and then I need to type /h hideline to get all the hideline command list. But that is too lengthy and will take time to get through it. So this command will add a faq for me and I can just add a short summary for hideline help, which can be seen only by me.