Hello!

I was wondering about these new `raw_title` and `version` options - perhaps it is useful to try and assess where we are with all the various menu parameters across all engines? It would be great to do a bit of an inventory. I have added this as a discussion point to our tech meeting - it would be cool if we could end up with an official shortlist of parameters and check that all engines support these. Potentially even introduce a new register_command method which uses more explicit arguments. Is `raw_title` and `version` used to group things up? Perhaps we could name it in a more generic way? Something like a `family` parameter which could be used to group things together? Is that weird? Let's discuss! :)